This category includes companies that provide optimization services focused primarily on pay-per-click advertising.

Sites for companies providing a variety of search engine optimization services, which may include PPC optimization, are listed under Computers/Internet/Web_Design_and_Development/Promotion/Search_Engine_Optimization_Firms/

This category includes companies that provide optimization services focused primarily on pay-per-click advertising.

Sites for companies providing a variety of search engine optimization services, which may include PPC optimization, are listed under Computers/Internet/Web_Design_and_Development/Promotion/Search_Engine_Optimization_Firms/