popart.appirio.com announcement, Appirio has publicly launched the Dreamforce Mobile Party App! This was a hotly contested challenge, with two excellent submissions, but mbleigh's heroku app took the cake.
You can find the landing page for the Dreamforce Mobile Party App at www.dreamforceparty.com, or go directly to the app at m.dreamforceparty.com. To follow along as the Dreamforce party-goers get their social on, just checkout the #DFParty hashtag on twitter!
[08/09/12 UPDATE: The party app has a new home - now located at www.dreamforcesocial.com - go get it!]