Yahoo Shouts Down Yahoo Publisher Network (YPN) and Referred to Chitika

Yahoo announced to close Yahoo Publisher Network (YPN) beta advertising service through which small online publishers, signed up to carry ads sold and distributed by the company in exchange for a commission. But, this Decision does not affect large, direct publishers and partners, nor advertisers using Content Match.

Yahoo’s version has always been a failure when compared to Google Adsense Network. According to YPN Blog: "Earlier today, Yahoo! emailed a small group of publishers participating in the Yahoo! Publisher Network self-service beta program (also known as “YPNO” or “Yahoo Publisher Network Online”), to inform them that we have decided to close the program effective April 30, 2010. This only affects our self-service platform for small publishers who syndicate our Content Match (contextual) listings."

- Source : http://www.monkeydollars.net