Second business idea of the day: Web-based Accountability
I think it would be very cool and useful to layer in some kind of request/bug-tracking system on top of a social networking application. That way, if I want to request something of a friend, I enter a request into the system. My friend can choose to accept or reject the request. If he accepts, it goes into his request queue. I can see the request in my personal list of outgoing requests, and he can see it in his list of incoming requests. From there, we can manage the request much like a bug-tracking system manages a bug.