The greatest thing about this product is that it is a mobile library. Most people don't have a plethora of space to store their books. This device could revolutionize the future of reading.The downsides are that it is extremely expensive and then it costs additional money to add books (about $10 or less a book). Secondly, there are only so many books you can get and most of them are more current and mainstream. If you are a fan of books that are older and maybe less popular, you're out of luck. While the demand remains for this product however, the list of books will grow.In short, I would only recommend this product for people that can't keep books with them for space or because they travel a lot. If you already have a large book collection, I wouldn't go getting rid of it for this product. Besides, what if your power goes out for a week and you can't charge it? What are you going to do, stare at it?