I'm working on something that will benefit people who have high traffic sites that don't want to show their users ads. The basics are here: http://www.trussapp.com/ -- it's not quite ready for production, but if it's something you might be interested in, I'm looking for beta users. cam@trussapp.com
Small nitpick, and if you want some unsolicited feedback on that site: the GIF that shows a user using the site goes super slow and it would be a lot more engaging if the user typed faster.
Although I don't know how much I can blame this on connection problems on my end, it looks like it takes five seconds or so to type "Test Tester", when in my opinion it should take only one.
It's effectively the same thing, but it prevents users from having to leave your site to contribute. The hope is that it will increase donations because of that.