Struggling with using bit.ly or logging on Windows Phone 7? Then you might want to learn about Phoney, a new open source project by Shawn Wildermuth that'll be at Open Source Fest at MIX11 on April 11th.
Shawn walks through the features that Phoney contains, including his Bitly helper, system resource helper, fading message helper, phone logging, and more. Shawn and John inspect the API and show how easy it's to use, as well as the results you get from coding with these features.
These're great utilities in a tiny dll that can really shorten the development time for some pretty common scenarios with WP7.
You can get Phoney from codeplex and it works with Nuget, too.