Just finished the minimum viable prototype for a identity and permissions brokering network: http://www.youtube.com/watch?v=yLU1TJmMSjo&feature=plcp

I'll be initially offering services such as single sign on and aggregated micropayments... think being able to charge as low as $0.25 / month / user for your service, without requiring users to sign up for a long period (which can hurt signup rates) or being hit with a $0.30 fee per transaction.

You can poke at the first demo yourself at http://prototype.projectmaelstrom.com