Yahoo announced a number of product feature enhancements for its Yahoo Stores offering. Merchants now have the option to process CID (Card Identification) codes for shoppers paying with American Express. Checkout Manager can now display this field and passing the value through First Data Merchant Services to American Express.
In addition, Yahoo added new Cross-Sell features, including reporting, custom pricing labels, and changes to the cart display (http://ystoreblog.com/blog/2008/03/measuring-cross-sell-performance-and-increasing-flexibility).
More information is available on the following Yahoo Stores blog post.
http://ystoreblog.com/blog/2008/03/march-2008-release-notes