I think Aaron's evil plot was to use machine learning to provide an automated friend-of-a-friend introduction service based on what you wrote on your infogami page. I'm pretty sure he posted about it somewhere - I remember because I had the same idea. Maybe this is a new platform for that idea.
I always wonder about google and that - gmail was (and still is I think) spread by sending invites. So there is the FOAF angle there as well - and the same accounts are used in all their apps not just email. Mix in search history (if you use it - which I don't) and that is just frightening.
