I've bought 221 books in ereader format (for Palm) and 19 books since February for my Kindle. With the Palm, I would buy a dozen at a time, to make it worth my while. So I always had a stash that I hadn't read yet. With the Kindle, I've downloaded 15-20 samples, but I won't buy each one until I've read the sample and am ready to read the book. So there is a different purchase thought pattern now.