iTrackMine is a personal collection manager that organizes everything from book and DVD libraries to sporting goods and wine, allowing you to share your collections with friends and family. You can enter items into iTrackMine by their ISBN, UPC, or simple title search. The site supports importing data from other services, like your iTunes collection, GoodReads.com library, and Delicious Library. Once you've established your collection, you can browse through it, graph the contents, and create wish lists. Loaning and borrowing from friends is easy, and you can track what you've loaned and send loan requests. In addition to managing your own collections, you can browse public collections and read reviews of the items you find. The mobile assistant allows you to access your collection and the collections of your friends from your mobile phone. If you search for an item with the mobile assistant, iTrackMine will tell you if you already own it or if a friend has it available for loan—meaning you can avoid buying a new season of House if you see that your friend Simon already owns it. For more management options, check out the battle of the media collection managers. Thanks John!