When I was younger, and more energetic, I would actually seek out an owner's website after seeing an advertisement. There would be a big splash ad for a movie on IGN or something, and I'd find the site for the movie, find the email address, and write some internet-crazy rant about how I'd never watch the movie, and tell everyone I knew that the movie sucked, all because I was shown an advertisement for the movie. It was pretty immature of me, but I felt so strongly about it at the time.

I don't think it was immature. I think wanting to fight for less crap online was idealistic.

Did you ever get any replies?

I get very suspicious of things I see advertised too much. It either implies that the company has way too much money and is blowing it on ads, implying some predatory monetisation, or that it's spending money it doesn't have on ads, which means it's going to either implode in a few months or have to jack up prices.

Remember: "Ad-supported content" isn't really ad-supported, it's supported by the customers of whoever's buying the ads.

I am looking to build a house, and a few days ago I was driving on the highway and saw a billboard for a custom house builder. I made a mental note never to contact that company. If your ad is on the highway, you are not building my house :)

My favorite are the injury lawyer billboards.

Always wondered how anyone picks an attorney from a billboard, as it seems that would be a negative signal but it must work because there are so many of them.