I bought a Livescribe Echo smartpen two years ago and only used it one or two times, including going through the tutorials. It is definitely a very neat technology demo, but my interest was as a developer. I wanted to be able to use the pens as an input device for applications on my Android phone. Unfortunately, this was pretty much impossible with the Echo pen because there is no built-in bluetooth so I gradually lost interest. It was a terrible lost opportunity for Livescribe since I can only imagine the applications one could build with Livescribe and an smartphone; they just seem to go well together.