I stumbled across Joe Marini's XAML Blog Reader sample which is simply awesome.  However it is just a sample and not a full fledged app. Has anyone run across a community based XAML RSS reader project?  I would love to participate if there is one underway - it could be an ideal testbed for Avalon, WinFS, Indigo, etc. 

So many cool technologies, so little time...  Pity that timecube guy is insane, we could all use the extra 72 hours per day.