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Posted by u/jpm_sd 4 years ago
Ask HN: Does targeted advertising work at all?
I'm too lazy to run ad blockers. So I see plenty of advertising on the internet. Here's the thing: all the ads seem to be for things that I already bought. After I placed an order with Select Blinds, I started getting relentless Select Blinds ads on YouTube. After I made some charitable donations to Mercy Ships and Heifer International, their ads started following me around everywhere. My wife recently got on a new immunosuppressant medication, and now I see ads for that all the time. Great job targeting! But I already spent the money? So what is the point of all this?
soared · 4 years ago
Yes. Brands, third parties, google, etc have all ran incremental sales lift tests, brand lift studies, customer lifetime value tests, etc and determined how successful tactics are and moved budget accordingly. There is a reason google/etc are worth billions.

I’ve posted this comment before, but:

1. It’s hard to tell when someone has bought a product. You buy it at a reseller and the brand will never know. Or you buy it on mobile, but have researched the brand on desktop. Or you purchased it at work, but were researching it at home. Advertisers suppress known buyers but they don’t perfectly match you to all of your devices.

2. Just like there are not so good developers and not so good code, there are not so good marketers who aren’t that great at their job. Or they have too much work and didn’t set it up correctly. DSPs are extremely extremely complicated, so it’s to make mistakes.

3. Retention and advertising to previous purchasers drives more additional purchases. Maybe you only purchased blinds for the main floor of your house but not the basement.

Syonyk · 4 years ago
> It’s hard to tell when someone has bought a product.

How about, "I've literally got it in my last-day purchase history on eBay and they keep showing me the same thing and a bunch of related stuff to the item that hasn't even arrived yet, but that they've taken my money for"?

... and then eBay follows me around showing the same stuff on other sites. The thing I've purchased. From eBay. At least, they did, until I got more aggressive blocking ads and started using the internet a ton less.

pooper · 4 years ago
A certain national bank which I shall not name had a banner on top of its app. The link opens a web page that goes to double click and then opens the bank's website. Why would a bank app take me through a double click link just to take me back to their own website? My guess is this is the same reason why eBay shows you ads for things you just bought. There are massive inefficiencies in these large organizations. I'm sure everything they do is locally optimal but not even close globally.
Scoundreller · 4 years ago
At least it’s a thing you bought. I wanted to sell a thing, so I went onto newegg to copy the description and paste it into my eBay listing and I got ads following me around the internet to buy the thing for weeks.

Like, I’m the opposite of interested in buying it, I’m trying to get rid of it.

Tomte · 4 years ago
My standard response to this: Prior purchases do have predictive power. They can very well be positively correlated to further purchases.

I've often bought stuff that didn't work for some reason. It was broken, or it had something that was bothering me. Maybe the power adapter was annoyingly loud (looking at you, Kyocera).

So I sent it back. But before I managed to go to the postal office a few days later I was already searching for a replacement online.

If I buy a TV set, I have indicated that I need/want a TV set. The rate of returns is broadly known (and maybe even specifically for me the return rate is known).

So Amazon et. al. do well to recommend similar stuff or things from the exact same product category to me.

Even right after I have bought a graphics tablet I'm infinitely more likely to buy a graphics tablet tomorrow, compared to my parents who have never bought one in their lives, and never will.

Or maybe the new TV turns out to be great, and I realize it would be nice to have a second one in my sleeping room, and why not buy a third one for the bathroom? ;-)

XorNot · 4 years ago
As far as I know, the convention about this is that when you buy a thing, the most likely next purchase statistically is in fact the same thing because you are unhappy with the one you bought.
soared · 4 years ago
This doesn’t seem like a genuine discourse, but purchase suppression can occur in batches. So that purchase data may not get fed back into all the advertising systems for days/weeks if it’s using a poor set up.

For example, sometimes for suppression brands literally just export a csv of customers and upload it to google. If your marketing guy does it once a week..

I’d assume eBay’s doesn’t work like that, but it’s possible. Also possible they just don’t suppress recently bought items !

david_allison · 4 years ago
If you buy a product and you're dissatisfied, you're more likely than the average person to buy a similar product.
amelius · 4 years ago
Just give me a button "I already own this".
mikewarot · 4 years ago
It is entirely possible that large corporations measure the effectiveness of their advertising by comparing it to sales, and are confusing correlation with causation on a massive scale. They spend more on advertising, and point to sales in the same time frame, as a cause, even if reality disagrees.

There are zero incentives for anyone to figure this out and fix it within corporate structures. I'd be thankful it makes advertising easy to spot, and less effective in real life. ;-)

Imagine if you're in the middle management of Google and you realize that target ads don't work, and the results to this point are just luck. You'd want to do something like "Improve your advertising spend" by making the ads "more efficient", and selling targeted ads to people that you know have already purchased, but the advertiser doesn't.

Eventually you could advertise that your ads are measured to be more than 80% correlated with a rise in sales. (Leaving out the reversed causality).

If this IS the case... shhhhhh... don't tell anyone. It would crash Google's stock price. Nah, who am I kidding, the market stays irrational for decades. ;-)

Never attribute to malice, that which can be explained by incompetence.

isomel · 4 years ago
Reminds me of this urban legend:

The VP of marketing of ebay realized that the keyword for which they spent the most money was "eBay". He thought this was nonsense and that people who looked for eBay should know how to get to their website, so he decided to save some marketing money and stopped putting money on they keyword. Result: no changes in the amount of visit to the website. However, the click-through rate, which is the metric by which marketing department was measured, decreased significantly. So the VP was fired and they even increased the money spent on the keyword.

names_are_hard · 4 years ago
And never attribute to incompetence that which can be explained by hundreds of individually intelligent people optimizing for their own short term benefit (ie career growth).

We see this in the software industry all the time. Large organizations act inefficiently or against their own interests because large organizations don't actually have consciousness, instead their decisions emerge from the sum of a lot of little decisions and actions, each of which might be individually reasonable.

As an aside, I believe that's how large organizations can come to be evil even if the vast majority of members are not evil.

oblaff · 4 years ago
Agreed. Online advertising measurement remains opaque and there is no incentive to fix it.

The book Subprime Attention Crisis by Tim Hwang does a good job covering this! (It is a solid bear case for fb,g,etc as well :p)

soared · 4 years ago
You clearly have no idea what you are talking about. Entire business are built on testing the effectiveness of online advertising, and providing that as a consulting device to brands. Do you think Nike would be happy if their vendor just said, “yeah everything drives positive lift”.

Nobody is confusing correlation and causation. These are rigorous studies completed by literal data scientists and statisticians. They are employed by neutral third parties who make money regardless of the outcome of the study, and showing positive outcomes where they do not occur would be hugely detrimental to their business.

And to your point, realizing advertising does not work happens all the fucking time. I see it literally all the time. It’s why you run studies. Then you take your budget, move it somewhere else, and run a test to see if it’s effective. Every major brand does it this way.

Joeri · 4 years ago
You are going to have to provide sources for these claims. Freakonomics podcast did an episode on the topic of online advertising and argued largely the opposite of what you’re saying, that there is massive overspending on online advertising, and increases in sales often get misattributed to ad campaigns when they have other causes.

https://freakonomics.com/podcast/does-advertising-actually-w...

distribot · 4 years ago
https://en.wikipedia.org/wiki/Targeted_advertising#:~:text=I...

Markets are imperfect and irrational, but you really don't think that there is a trillion dollar misunderstanding about the efficacy of the practice? Idk jack about advertising but it seems unlikely to me.

amelius · 4 years ago
> Advertisers suppress known buyers but they don’t perfectly match you to all of your devices.

And in case of doubt ... they found that it is more advantageous to them to just keep bothering you.

nlh · 4 years ago
Every time there's a thread on HN about advertising, there's at least a few comments (there are already some in this thread) that claim, loudly, "Ads don't work on me! I never buy things based on ads!".

The thing is, they're all wrong. Advertising is a trillion-dollar business because it works. The human mind is susceptible to suggestion, and it's been demonstrated over and over again for basically as long as we've had civilization.

What is ALSO true, however, is that ad dollars are exceeeeeedingly inefficiently deployed. Which is why you experience things like weird retargeting on things you've already boight. I experience this too -- there are several brands that for which I'm a happy paying customer and I still see their ads 1-2 times a day.

Psychlist · 4 years ago
> Claim "Ads don't work on me! I never buy things based on ads!". The thing is, they're all wrong.

All you've said is "A big industry does this. Therefore it works on everyone".

Which doesn't follow at all. The industry doesn't have to work on everyone to be profitable, and could operate effectively even knowing that. Whether they'd be able to take peoples' money as effectively if they said "our ads work on 73% of people, making them 0.45% more likely to buy the advertised product"... doesn't matter.

The existence of whales on the online gaming market suggests a counter-strategy might be more effective: some people are very, very susceptible to ads. Targetting them is likely to be both cheaper and more effective than trying to get the attention of people who are minimally affected by ads.

It's hardly shocking news that the advertising industry might lie, though. To the clients as well as their targets.

mkdirp · 4 years ago
Ads don't work on me because I block all ads*. I sent through my wife's Instagram account earlier today (with her consent of course) and the amount of ads is mind boggling. Sometimes it's not easy to figure out what's an ad and what's not.

* where I can. I still struggle with "sponsored" content, or fake review sites. It's becoming harder and harder to figure out what isn't an ad, and I hate it. If I see a good review, I don't know if it isn't an ad. If I see a bad review, I don't know it's not a competitor's doing.

lamontcg · 4 years ago
Review sites are probably all ads these days. Its better to search reddit or something like that for recommendations, but of course those can get astroturf'd, but for smaller brands that likely isn't an issue.
analog31 · 4 years ago
>>> The human mind is susceptible to suggestion, and it's been demonstrated over and over again for basically as long as we've had civilization.

I don't doubt that advertising works on me at some level. This is all the more reason to limit my own exposure to it. I'm one of those people who reacts with surprise and revulsion when we see what the Web looks like with ads.

>>> Which is why you experience things like weird retargeting on things you've already boight.

My favorites so far are the e-mails I get from online vendors, that say things like:

"People who bought shoes have also bought these items..."

"Here are some things to go with your batteries..."

smileybarry · 4 years ago
It depends where and when, I find that Instagram/Meta ads sometimes work for me, and Amazon related items occasionally do too. But more often than not (I wrote in another comment) I get ads in a category I am interested in, but from one of the many brands that sell a marked-up "recycled polyester fabric! 50% off!" type of thing that's clearly worse than "real" brands, like a backpack worse than the one I'm trying to replace.
vba616 · 4 years ago
I've been looking for a certain home improvement product for roughly six months. I've searched on-line dozens of times, I've been to stores, nobody wants to sell it to me, show me ads, nothing.

>Advertising is a trillion-dollar business because it works

How many months in the corporate world did you spend before figuring out that money = results and substance takes precedence over appearance?

Rebelgecko · 4 years ago
What is the strongest signal that someone will be buying blinds the near future?

a) Someone recently bought blinds

b) Someone bought blinds 5 years ago

c) Someone hasn't bought blinds ever (maybe they're renting, or just tape newspaper to their windows)

Turns out, on average, the answer is a. Either because you're returning blinds you don't like and are in the market for replacements, or because you're doing a home remodel and once you fix up one window you'll need blinds for the next one. Even if most people who bought blinds won't be buying new ones in the next week, those are still better odds than advertising to someone who will never buy blinds in their entire life.

sli · 4 years ago
I often wonder how various products sort out on this question because while this example makes sense, other ones would not. A common example is ladders. I might buy more than one because you need two lengths, but I can't imagine many people are frequent return customers for ladders the way they may be for blinds, and I can't think of any instances where they would be back in the market for a ladder that are also realistic (e.g. probably not a lot of people buying all their friends new ladders).
vegesm · 4 years ago
Back of a napkin calculation: showing OP 100 ads of blinds probably costs 0.1$ in the US. The cost of a blind is 100$ (I have no idea, don't live in the US). So if the probability of buying a second blind is at least 0.1% it was worth running the campaign.

The fact is, online ads are super cheap.

sfe22 · 4 years ago
You can target ads in US at $1 CPM?
throwawaylinux · 4 years ago
Where does this data come from?

What do you think if you included the option d) Someone recently made a search that included the word "blinds" ?

alkonaut · 4 years ago
A person in category a probably also searched. The thing is just that a recent purchase isn’t a strong enough signal to not retarget. It’s a too big risk to take because the probable recent buyers are fewer so it’s not worth filtering them out. At least that’s my impression of how it works.
yosefjaved1 · 4 years ago
If you're doing this from a chrome browser that you're logged into, then it's the advertiser that is at fault. Clearly, if you bought the item, then they should now have you in their system as a conversion. With that information and you not clearing your cookies, they should have setup their campaign to not target you for the same item. It sounds like lazy advertisers.

To answer your initial question, it works and it works really well. As advertisers, we see a significant difference in sales when we don't advertise online. This is especially true for search advertising and retargeting. ToFu first touch display advertising doesn't necessarily work as a sale generator. It's the subsequent advertising / display retargeting we do afterwards that works. Unfortunately for advertisers, the days of doing the way we do things will come to an end with third party cookies essentially going away. It'll be interesting to see how digital advertising changes (specifically for open garden platforms like Google ads) without the third-party cookies.

saberworks · 4 years ago
I use an ad blocker so don't generally see ads. However, I own a Kindle Voyage which I use to read sci-fi and fantasy novels. I have not paid the extra $20 or whatever it is to disable the ads. The ads are definitely targeted, as I only see ads for books related to what I've already purchased and read. In fact, all I see is ads for books in the series I happen to be reading at the time. For example, I'm finally getting around to reading the rest of the Robert Jordan Wheel of Time series. I started over and now I'm on book 5, all purchased through Amazon so far, all directly through the store on the kindle. And it just keeps advertising books 1-5 (which I've already purchased). It makes no sense.

I have a list of authors I follow on amazon.com. It would be a better use of everyone's time if they just picked a random book from any of my favorite authors, made sure I hadn't already purchased it through amazon, and only then show it to me. It's like they're not even trying.

vanilla_nut · 4 years ago
FYI, you can just ask them in a support chat to remove the ads and they'll do it for free.
vidarh · 4 years ago
Authors and publishers can buy ads on Amazon, including on kindles, and the targeting includes the ability for people to pick their own keywords or advertise on other specific words, as well as letting Amazon choose. As such, Amazon earns money on a whole lot of those ads whether or not you buy anything, and a lot of the people involved are likely not very experienced at targeting.
kcplate · 4 years ago
So In my experience on the advertiser side of these suggestion widgets—The algorithms generally aren’t all that smart behind them, and it’s possible in Amazon’s case the items you are getting recommended might have a different SKU number than the ones you have already bought, but of course it is the same author and genre to your reading interest. Doubt it’s looking at book title to be honest.
nottorp · 4 years ago
> The ads are definitely targeted, as I only see ads for books related to what I've already purchased and read.

Maybe you do. I'm subscribed to Asimov's and SF&F electronic editions digitally via the Kindle store. Not even once have I noticed an ad for scifi/fantasy books on my Kindle. Most of the time it's fluffy bestsellers.

lanstin · 4 years ago
Amazon advertises and recommends with a notification books that I have already read on Kindle all the time. But they aren’t paying for these so not the same problem as the purchase based targeting.
Simon_O_Rourke · 4 years ago
Yes, yes they absolutely do, although not quite at the levels and extent you might think. I worked with an ad network DSP, who's entire business was figuring out what crap to put in front of what users.

All I'll say is that they used pretty low down ways to get to people, one example that sticks out was the amount of targeting that went on late Friday, late Saturday night in APAC when folks would stumble home drunk and go online.

Everything and the kitchen sink was thrown at these people, and it often resulted in multi thousand dollar sales, including a few automobiles!

diffeomorphism · 4 years ago
Two questions:

- if the buyer was intoxicated, isn't that sale invalid?

- how is that in any way ethical?

Simon_O_Rourke · 4 years ago
I don't think selling things to people while they are drunk/high/otherwise is invalid. Otherwise Walmart would have to breathalyze visitors.

However, it's massively, objectively, unequivocally unethical, and part of the reason I quit that place. And for the record, selling crap to drunk people in APAC was probably the least morally suspect tactic this company got up too.

squeaky-clean · 4 years ago
> if the buyer was intoxicated, isn't that sale invalid?

Under what law? Am I not allowed to drunkenly order food at a restaurant? What's the threshold for a purchase that should be invalid?

swiftcoder · 4 years ago
> if the buyer was intoxicated, isn't that sale invalid?

Sadly, we don't hold capitalism to consent standards

newscracker · 4 years ago
One more reason for why you’re seeing the same ads.

Buyer’s remorse and post-purchase confirmation: You’re seeing ads for products you bought because the brand or marketing team decided to spend some more money to have you avoid buyer’s remorse and to reaffirm to yourself that the purchase was a good one.

This may or may not work, depending on the person and the product, but some of these things are probably not measured well enough to decide who should see the same ad and who doesn’t need to.

wruza · 4 years ago
I run adblockers for the same reason. I’m not against ads or supporting sites via ads, and I actually want something new to try. But all ads I see fall into two categories: already bought it for a couple of weeks. Or completely irrelevant, which I never click.

They have everything on me: my age, sex, social state and circles, location, life habits, profession, work hours, sleep hours, movie and porn preferences, which non-entertainment topics I’m interested in, which medical issues I have, and probably 50 more properties I never thought about.

But I never clicked on any nonsense they tried to advertise to me. I see nothing new, nothing interesting, nothing relevant to my life in ads. None of my new interests ever came from these flashy boxes.