I agree. I guess my main point was that an app like that could spread like a virus if placed in the right hands within a tight community like a college dorm. At the same time, it seems a little anal/nerdy to take a picture of an item before you hand it off. "Yeah you can borrow that, one sec though, let me take a picture of it and document that you were the one who borrowed it." It needs to be as simple and effortless as possible.