Well I doubt Amazon would engage in selling illicit products, but I confess I have never seen the product before let alone use it, so can't comment on its efficacy.
Yeah, it's like a media player with access to all sorts of films and channels, but to me it sounds a bit dodgy.
I don't know why, it just sounds like it's too good to be true, like something you ought to pay a subscription for, but maybe it's a bit like Freeview, I don't know.
I'm not sure whether to invest in one.
Second thoughts, with channels like lubetube and empflix, I'm getting less interested.
The "Free" channels look to be various streaming channels, including plenty of Porn. To build an XBMC (Or Kodi as it is being renamed) media centre is quite easy on a PI. The trickiest thing is to put the licence keys for playing mpeg2 into it to allow you to watch DVDs. Bear in mind that you will not be able to store much data onto the PI unless you use an external drive or network attached storage.