Yahoo Shutting Down Content Network

Yahoo Shutting Down Content Network effective April 30, 2010.

http://www.businessinsider.com/yahoo-kills-its-publisher-network-effective-april-30-2010-3

For the opportunity to continue earning revenue, Yahoo suggest using
Chitika, a leading advertising network that syndicates Yahoo! Content Match and Sponsored Search ads. Chitika has set up a special process for

YPNO beta publishers to participate in its platform. Click here for more information.