I was looking into getting a Nook and I heard through the grape vine that it is possible to rent books and not have to buy them, a virtual library of sorts, that it if it is not returned in time you can be hit with fines and such. I tried to do some googling, but my google fu is lacking, and I don't quite understand the technical jargon that comes up. 
Any one have a Nook and has used this service?

Any one have a Nook and has used this service?