Looks like a interesting idea. Would be cool if you could incorporate YouTube into it as well. YouTube is my primary Social Network (http://YouTube.com/Urgo) where I did a video a day for a whole year may 2010-may 2011 and still make a couple vlogs a week. If that could be tied in as well with my twitter, flickr & foursquare I think I'd be sold into trying it out :) I signed up for a beta invite.