Pay Per Click 
1. Happytofind
Search engine to search the web for shopping, internet marketing, and other topics.
http://www.happytofind.com/
Forums for PPC and search engine publishers and advertisers to meet and share experiences. Offers ability for users to write reviews about PPC companies with which they have experience.
http://www.payperclicktalk.com/
Reviews of numerous PPC search engines along with links to forums, articles, and other search engines.
http://www.payperclicksearchengines.com/