What do u think about this top 10 pay per click search engines? Some of those are really top without doubt but I've never heard about some of those: Google AdWords Yahoo! Search Marketing ABC Search SearchFeed 7Search MIVA Enhance Interactive Ask.com Microsoft adCenter Findology and here you can check for other pay per click advertising companies http://www.payperclickuniverse.com/other-pay-per-click-search-engines.php