I came across this forum that is hosted by Top-Free-Forums.com. They allow you to set up a free forum on their servers, and they place AdSense ads on your site. This site is obviously dead, and has fallen prey to spammers posting porn links. The AdSense ads are still at the top of each page, surely Top-Free-Forums could be banned for this? I have reported the site to Top-Free-Forums in the hope they take it off-line soon!
4 days since I made them aware of this site, and it's still online, and they haven't even replied to my email. Makes me feel like reporting them to Google now! This is the site I am talking about: http://www.top-free-forums.com/forums/index.php?mforum=miniwii
I made them aware out of courtesy that this site could affect their future income through adsense giving them the chance to remove it. They haven't even replied to my email. They obviously make quite some income from adsense, and a site like this could easily get them banned.
I think you should focus on building content on your own website instead of waisting time with reporting other sites that don't harm you to Google. I feel for you, are you really that bored?
Sites that violate the adsense TOS are a potential harm to advertisers. I, for one, commend Brian123 for what he's doing.