...and it's called "Bookswim." I heard about it from my girl over at the Coupon Project and spent about two hours playing on their website last night. Bookswim is an online book rental service that sends books directly to your home. Because there's never any due date, there's no late fees. Plans start at just $9.95 per month and you'll always be sent pre-paid mailing envelopes to return your books.
To learn more and to sign up, go here.