It's a neat little device. I bought mine probably a year or so ago and it's sat largely un-used. I think they were fairly new when I got mine, so these issues might have been fixed, but...

1) small size (think mine's 7 inches or so?) 2) difficult/impossible to write small enough to fit a good amount 3) no way to save pages (in any way). I tried to hack my way around this by snapping pictures of full pages, but it just became too much of a hassle.