I think this is a very good list, thanks for spending the time putting it together. I am most interested in how leveraging facebook could create a great dating

I think this is a very good list, thanks for spending the time putting it together. I am most interested in how leveraging facebook could create a great dating business model. The "connecting people" concept could also be inclusive of careers and leverage Facebook to offer a LinkedIn alternative. Does anyone know if either of these businesses are already running w/ traction?