H1kari sez, "When I shared an apartment, there was constant tension over who owed for utilities and beer. Later in life, my girlfriend and I would often argue over who paid last time. Now, a site called BillMonk lets you enter shared bills and objectively know where you stand with your friends. When you're on the go, you can record debts from your phone via SMS. The notion of borrowing is extended to include your personal library so you can track which things are lent out. There's all sorts of cool features like auto-splitting bills, ties into amazon's product lookup system for tracking your book collection, etc. I've found it super useful, so just thought I'd share it!"
(Thanks, H1kar1!)
