I'd like to know if you can be on your ps vita and ps3 on the same account both cosoles login? Should I have 1 for ps vita and 1 for ps3 or I can have for both 1?
The PSN allows you to have 2 PS3s and 2 handhelds (PSP or PSVita) to be activated and logged into your PSN account at the same time.
I can confirm that you can be logged on both a Vita and a PS3 at the same time. When I was messing around with Wipeout's crossplay, I was in the game lobby twice. Was pretty confusing to the other two players in the room. When the race started, only one of me got off the line at the start of the race, though. LOL
i would advise you to use the same account on both the vita and the ps3. so that way you can rack up a bunch of trophies on the same account.
And any games you buy that can be used on both system only have to be purchased once (miniS and PSP games), also those games that are released on both PS3 and PSVita and you get deals or discounts for getting both versions may only be applicable with one account.