Facebook and Amazon announced a deal which will introduce the next chapter of ecommerce. Mass personalization and social shopping will become mainstream.
Now, users are able to log in with Facebook connect to their Amazon account. Amazon can personalize the user experience, offer discounts to the social graph or offer personalized recommendations on the users’ preferences in the profile.

German Basic Thinking Blog Comment:
http://www.basicthinking.de/blog/2010/07/28/amazon-facebook-deal-schoener-shoppen-mit-deinen-profildaten/

Read Write Web already predicted this in 2008
http://www.readwriteweb.com/archives/what_if_amazon_and_itunes_impl.php

Techrunch Article
http://techcrunch.com/2010/07/27/amazon-now-taps-into-facebook-for-social-product-recommendations/

eweek
http://www.eweek.com/c/a/Web-Services-Web-20-and-SOA/Amazon-Facebook-Connect-for-Social-Shopping-583131/