Looks interesting. I really hope they try to change it up completely from 'the facebook model', while still including essential features - personally I'd like

Looks interesting. I really hope they try to change it up completely from 'the facebook model', while still including essential features - personally I'd like to see more emphasis on the virality (yes, virality!) of groups. These guys seem pretty smart, energetic, and optimistic. Anything that breaks the status quo is good. However, they could have used some screen capture for the demo ... It wasn't entirely clear to me what was going on there.