The Microsoft Connect web site has a listing of current beta programs that you can apply to join. I applied to join the Windows Live Mobile beta, and there are 10 questions to answer. I answered that I didn’t have a phone to test the service on, and that I was only willing to answer survey questions. I submitted the form, and the next morning I had a welcome email.
They obviously don’t have very high requirements to join the beta.
As of right now, the following beta programs are available from this site:
- Microsoft Windows Compute Cluster Server 2003 Beta
- Windows Network Developer Platform
- OneNote 2003
- Windows in italiano
- DirectX SDK Public Beta Program
- SSMA V2
- Commerce Server 2006 Public Beta
- Windows Live beta for Mobile (UK)
- Windows Live Mobile beta (USA)