If you dig into the info on the site its clear that all it really is, is a pc with a tv/hd output, which most modern gfx cards can do, and it runs either a custom version of linux or it seems windows vista and its not very well priced for such a spec, my PC cost half that and is more than twice the power :S
I guess if they got some major 3rd party support for games like EA,Ubisoft etc then yeah it probably could get a few more units sold but as it stands its one of a growing number of pc in a box's thats appeared over the years and disappeared just as fast.