Anyone who wants to help with this, feel free to drop me a line at peter.i.ehrlich@gmail.com and I'll put everyone in touch there..
The idea is attractive to me a developer because I want a lightweight way to use a graph database, and the social integrations seem extremely self-evident! (Make a fb app, share when you add something to your list, collaborate with friends to get things done, win points, blah blah, etc etc). All dev help is welome!
As a business person, my getting anyone to use it might be a small miracle. All biz help is welcome!
Bottom line is it can be done in a very lightweight and fun kind of a way. I see no reason a beta couldn't be made and given to testers in a week!