[julianeon]

I don't think that website really wants to call attention to the fact that it's serving you ads. They want it to be a seamless part of the Internet experience. Ideally, you wouldn't even notice the ads are ads. They don't want to support services that remind you that they're there, and are annoying. And if you want to monetize your site, they already have a preferred solution for you: sign up to show ads and get a check from them.