Where is a good/trustworthy PPC/PPM review site or publishers?

Hello.
Can anyone reccomend a site or forum thread that reviews the top PPC ad programs such as Google, MSN, Yahoo, and those others I’m hearing about too.. Not affiliate programs.
Is there a trustworthy page that reviews these in one spot, letting you know the aveage amount of PPC, types of sites allows(gambling/porn), numbers of advertisers they work with and a user feedback rating of somesort?

Thanks for your suggestions.

Original post by GreenGambler