How did you pinpoint the exact location?
Seeing as several are in entirely the wrong city, one is in the Tidal Basin in DC, another on the National Mall.. they clearly don't.
Here's how you can do it with ublock:
www.reddit.com##img:style(filter: blur(10px);)
www.reddit.com##body:style(filter: grayscale(1);)Place yourself in the shoes of an ad buyer: a random website offers to display your ad. How do you know what you're getting?