Box.net has already given users of the TouchPad, iOS, and LG Android phones 50GB of free cloud storage, and now it's bringing that love to Sony Ericsson Xperia owners. All you need to do is download the Box app from the Android market, log in from your Xperia, and you'll get your 50GB. This promo runs from now through the end of 2012, so anyone who bought the Xperia X10 or a newer Xperia device has plenty of time to jump on this deal. That'll include devices like the Xperia Mini Pro and the ever-popular Xperia Play. Sony Ericsson and LG are on board with Box — who will be the next Android manufacturer to join in?