Campaign to Watch: This ad just out for VW analyzes the user’s twitter name and based on feed content suggests the VW model that is most ’suited’ to the customer.  The potential for making ads relevant and engaging is staggering.  Check it out on the Creative Zone and see what others are saying about it already:

http://digital-conversation.blogspot.com/2009/06/imedia-first-twitter-in-ads.html

http://digital-examples.blogspot.com/2009/06/vw-interactive-twitter-ad.html