Microsoft's Behavioral Recommender System's Patent

http://www.google.com/patents?id=XVh4AAAAEBAJ&dq=recommendation+systems

View patent at USPTO (will require a special plug-in)

Filing date: Jul 15, 2003
Issue date: Mar 14, 2006
Inventor: Christopher B. Weare

Claim Summary:

This system is unique from attribute based or collaborative filtering based systems in that it recalculates to make predictions based on current behavior of the user.  Users rate items and rate the recommendations made by the system.  This is still similar to Netflix to me.

I have not been able to determine *exactly* where MS is using this.  It is possible that has been shelved.