Mike Ormond threw together a very quick test of Nick Randolph's Social Viewer app template for VS using a few of the RSS feeds from the blogs of people on his team.
Source: Mike's Blog
If you’ve been thinking about building a Windows Phone app but weren’t sure where to start, how about this for an idea? Nick Randolph of Built to Roam has created a customizable Social Viewer app template for Visual Studio. The template is the core of an application that allows you to aggregate multiple feed such as RSS, Atom, Twitter and Facebook. It also supports Bit.ly for sharing links, caching for offline reading, trials and even advertising.