I had someone once give me an affiliate link for Gumroad and I got credited a sale.
Gumroad wouldn't let me accept payment for it in a way that was reasonable for $17.
It first asked me for basic information like my name. Then it asked me for my address. Then it asked me for the last 4 of my social security number. Then it asked me for my full social security number along with uploading my driver's license or passport. All through out this process is was slowly collecting my personal information 1 form at a time and it was positioned where it didn't seem like it ever needed more than the single piece of info it asked for. Every time I submit 1 piece of information it said it failed to verify my account but never said why then asked for more.
I asked them for documentation or compliance reports on how my data was going to be stored and they ignored my support request.
I waited over 2 weeks for a response while asking following ups and got no reply. I stopped providing information after the last 4 of my social.
I decided to take a shot and emailed the CEO. In a few hours he personally Zelle'd me the amount with no questions asked and adjusted my account on Gumroad to reflect that. I don't know what to make of this, but it was disappointing I had to email the CEO to get $17 but he was very reasonable about it.
I don't even ask. If it looks like a tip and is computed like a tip, it is one. How the owners and workers hash out their payment structure is none of my business as a customer.
I 100% agree that tips should be abolished and consumers should pay a clear and fixed price for goods and services, but if you accept that that is not an option, then "service fees" actually make sense. That being said, I can understand the ire that they may cause the wait staff, since many consumers may think those "service fees" are tips, and as a result, may not receive anything for their work. No great solutions here
Next 50-100 was cold emails.
After that, mostly word-of-mouth.
Target audience was publishers (audience development/growth)