httpwebwitch - 4:32 pm on Jan 11, 2010 (gmt 0)

After careful consideration, we have decided to enter into a strategic partnership with PriceGrabber to power the Product Submit functionality of Yahoo! Shopping as of March 11, 2010. As a result of these changes, Yahoo! will no longer provide the Shopping Web Services API, including Shopping Results (the “Yahoo! Shopping Syndication Services”) to you as of March 11, 2010.

source [developer.yahoo.net]