adMarketplace's AMPkeywords.com has a special offer running. New users receive $25 in free clicks plus a $25 bonus, for a total of $50 of free advertising on their network of search engines and content sites. More information and sign up.

AMPKeywords.com is a cost-per-click advertising service for eBay sellers and other businesses. It is integrated with eBay so keywords can be automatically suggested from items for sale.