Why We're Here
FrugalReader.com exists to help you and avid readers everywhere enjoy the satisfaction and convenience of reading the books you want, when you want them, at the lowest possible cost.
Seems pretty cool.
Update: Upon further examination, it may be that part of the revenue model is click through links to Amazon to buy books that aren't available for borrowing. I certainly don't begrudge them the opportunity to make a little cash, since they appear to be charging nothing at all for the service.