This is a great concept. I've had partially finished code sitting around that performed similar task in a worse way. I really wanted a simple way to calculate a

This is a great concept. I've had partially finished code sitting around that performed similar task in a worse way. I really wanted a simple way to calculate and divide bills between roommates or clubs. They look like they got it right. Hopefully they get an iPhone app going, as I see that as a critical part of this. "Hey, I just bought stuff for the party, I'll add up the receipts on my phone and everyone can pay me back whenever they get a chance. I'll send the invites right from my addressbook".