Wait, Google+ launched with data export (Google Takeout) on *day 1*? First content silo to do so I think. Links: https://plus.google.com/ https://www.google.com/takeout/ and obligatory funny video: http://youtu.be/QP4NI5o-WUw nicely done @therealfitz and team. Update: see the follow-up related blog post: tantek.com/2011/181/b1/google-plus-pownce-friends-federation-data-export-summer-social-war