buddypress is open source and free - not sure what it would take to make it 'federated' - I have not used the export data option in wordpress to know what may o

buddypress is open source and free - not sure what it would take to make it 'federated' - I have not used the export data option in wordpress to know what may or may not include with buddypress - but there may already be ways to export from BP and to pull rss feeds from the various sections.