LuckySurf encourages users to not stay on its site, yet promises advertisers greater access to consumers. Learn about its business model.

The CueCat is a double-edged sword. On one side it allows users to scan bar code embedded in print - or on their television screen - and instantly be taken to the corresponding advertiser's site. On the other side, it has been in the cross-hairs of many p

AOL has been selling a lot of banner ads that show up on their co-branded version of eBay. Now that relationship will be extended as AOL's sales force will sell ads to appear on the main eBay site and the two companies will share revenues.