As there are now Visual Studio Achievements, I used the available API and built a Windows Phone application around it, that allows achievement tracking and comparison. Details here.
I am currently looking for beta-testers. If you want to participate, shoot me an email to ddelimarsky $at$ live.com with the Live ID email you have associated with your Windows Phone - would appreciate any feedback.
PS: You don't need to be a registered AppHub developer or have a developer-unlocked Windows Phone to be a part of it.
The application is officially out of beta and is now available in the Windows Phone Marketplace:
Then, you can simply download the app from the Marketplace (link in previous post) and use your Channel9 handle.
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