My gadget loving husband bought me one for Christmas last year ... it's still in the box. I thought the idea was neat, but it would be more suited to an office etc. I can't really see the use of it at home. It's a bit like a personal tv ... except much slower.
You can set a timer on it to display pictures at different times ... eg. not at night.
Decide where you would put it before you buy ... and imagine whether it would be a distraction or not,