No, PSN cards can be used only once. If are from a different region and you need a PSN card that belongs to a different region since you have a different region account then you can buy the PSN card from online
There's no Naruto games on the PSN store
It means you have put in wrong redeem codes on psn and can't try again until 24 hours
Supposed to have some services back up I.e. psn on may 3rd but we will see see related link or question
On 5/26/09
WHAT DOES PSN STAND FOR OR MEAN
by psn i assume you mean play station network, and no it wont as the PSN is free, however it could if you are buying something.
No, a Japanese PSN account can only be funded with a Japanese PSN card, one with a yen amount on it.
It's actually known as a PSN ID. http://www.us.playstation.com/PSN/mediago
Yes they do. Anyone who goes online on the PlayStation Network needs an account
The PSP-3000 can access the PSN, yes.
by PSN you need a account to PSN
You can't. PSN stands for PlayStation Network. You can't connect a DS to PSN.
No you can't, PSN cards are country and currency locked. You cannot redeem German PSN topup cards on a UK PSN account.
Yes, there is a PSN link on the Vita's LiveArea.
The password is whatever you set it as when you registered your PSN account.
No, PSN is free and there is no indication that is going to change.