Wowbrary is amazing, this from lifehacker.com:
Web application Wowbrary sends weekly emails (or RSS feeds) when new books, DVDs, or CDs show up at your local library—so you can snatch them before everybody else.
Wowbrary sounds like quite the handy RSS reader that will turn your library experience into a thoroughly managed revolving door of information. I am definitely going to check this out and maintain new library requests if it works out. At the moment, I generally check-out older books, CDs, and DVDs. However, my predilection for trade-paper back comic books could become better nourished thanks to Wowbrary. They have a great subject range to choose from, or you can RSS all new items. New RSS items include the title, a medium sized image, star rating, and an excellent abstract/description blurb.
For now, I’ll RSS : Comics & Graphic Novels, DVDs, CDs Music & Shows, and Top Choices.