Theres programs that let you use the cuecat to catalog your CDs, DVDs, books, ETC...you scan it in and it finds out all sorts of information about it from the web. And when you let a friend borrow it, you scan it in again and it will remind you later about getting it back... I picked up a couple of the cuecats too when they were free, but never really used them-- I wonder where they are now?