German Client App Dev MVP Gregor Biswanger came back from the 2011 Global Summit with a special souvenir—a Windows Presentation Foundation (WPF) 4 and Silverlight 4 DVD package signed by the WPF, Silverlight and Expression Blend product teams so that he could put it up for auction on eBay to support the German Cancer Aid. Bidding starts 16th March 2011 at 7 pm CET. To bid, go here now. And you can find out more about the auction and the German Cancer Aid at Gregor’s blog post.