1. A computer-implemented method for managing and serving electronic advertisements for affiliated Web page publishers and advertisers, the method comprising: receiving a request for an electronic advertisement for a Web page, wherein the Web page is associated with a Web page publisher; accessing at least one keyword appearing in said Web page; identifying, by a computer, at least one relevant electronic advertisement related to said at least one keyword, the at least one relevant electronic advertisement being associated with an advertiser affiliated with said Web page publisher; and communicating at least one of said at least one relevant electronic advertisement to said Web page for display.