Sony has revealed that the PlayStation Vita will only allow one PlayStation Network ID per device. If you want to add a new PSN ID then the unit will have to be restored to factory settings. Lame.
Aside from this being a hassle for those who wanted to share their Vita among siblings or, anyone really, it makes it virtually impossible to play games from different regions unless you want to reset your system each time. It's a way to softly region-lock the system without actually saying that's it's region locked.
Having only one PSN ID means you'll have to get DLC for only one region, and you won't be able to take advantage of PSN region-specific deals. This info, that Sony conveniently only announced via the back of a pamphlet at an event in Japan, means that the sales of digital games is sure to go down.
It could potentially be a way to limit piracy, but I can see why a lot of people who were planning to share their console or get their content from different PSN regions are mad about the news. What do you think?