Okay, I had this book site a while back. But the notion was flawed, and ultimately relied too much on user entry. Which will never work.
There are ways I can skip a lot of the requirements for that, so have been toying with the notion of playing with said site again. If only to find out which books other people have that I could be stealing from you guys.
But the thought grew a bit, and I'm wondering if this became a larger site, would more people consider joining, and if so, would you consider loaning books to complete strangers. I think the main flaw is of course the effort involved in getting a book to a complete stranger, but meh, who knows.