Part of the email :

"We are writing to remind you that the Amazon E-Commerce Web Service 3.0 is scheduled to be deprecated on March, 31 2008. Our monitoring indicates that your associate tag is being passed into calls to Amazon E-Commerce Web Service 3.0. After March 31, 2008, we will no longer accept Amazon ECS 3.0 requests. Please make sure to contact your development team or application provider to ensure that they have upgraded to Amazon Associates Web Service 4.0 (formerly Amazon E-commerce Web Service 4.0) so that you or your customers are not affected by the shutdown.

Amazon ECS 3.0 shutdown was announced a year ago in February 2007. Amazon Associates Web Service 4.0 has had complete feature and data parity with Amazon ECS 3.0 since June 2006 (Version: 2006-06-28). We will re-invest the existing maintenance effort saved by discontinuing Amazon ECS 3.0 into Amazon Associates Web Service 4.0 to allow for the introduction of more features and capabilities. "

Tasari