I have had it for a long while now and I have to say I really like it. I like the idea of being able to keep track of all my media, games and software in one place. For example, I can create different shelves to keep track of what dvd/tv shows I have ripped and have not ripped, as a sort of shopping cart/wish list. As far as your own catagories-not really. I mean you can create a new shelf but it would be very cumbersome to add things to it as you would have to add it manually. Could you possibly give an example of what kind of category you want? I mean right now they have books, movies, software, toys, music, video games, gadgets, tools and clothes. Is there something that either of these categories could not fill?