The demo is pretty clunky w/ all the views in separate frames, and I'd prefer a full working demo w/o entering an email address. It doesn't concisely make clear what it is & how it's different from other offerings, like others mentioned. A point-by-point comparison vs Google Docs might help. Or emphasizing that the direction you're taking it and the way you're asking for user feedback is just completely different from the way Google would ever do things. Hard to do w/o negative messaging but currently doesn't leave one feeling confident that it's a great idea to start using it as a collaboration tool on a serious project.