Microsoft is embracing extensibility... using Stackoverflow.com for forums, and uservoice for VS feedback!

Where are the MSDN forums?

We have decided to migrate our forums to stackoverflow.com in order to better build a community around Pex and Moles. Questions about Pex should be tagged with 'Pex' and Moles with 'Moles'...

- from http://research.microsoft.com/en-us/projects/pex/