The ease of ordering books might result in buying too many books. It is just so easy. I've found several books I wanted that weren't on the Kindle list yet, but hopefully that list will continue to expand.
A simple example of this is that I was reading through a number of blogs just now while watching the Olympics and came across this post about an interesting book. I followed the link on that blog to Amazon and because I was interested in this, I hit the one click buy and it was wirelessly downloaded to my Kindle. I should also mention that I ordered one during the day today too so that is two that I ordered just today.
Pretty fast. Certainly vulnerable to impulse buys. Fortunately, I read very fast and at times, can read several books per week.
I was showing my friend Kevin the Kindle recently and he indicated he wanted one. Later, he borrowed mine(via my wife) and when I commented to him about how fast he got his Kindle, he remarked that he even got it with my own books pre-downloaded on it.
BTW, the book I reference above is called Chasing Daylight and it is a different book than the one by the same title I referenced in an earlier posting. Weird.