Playstation Network Cards are not free and do not use virtual money but actual money
No because you need a router to connect to the playstation network
you don't
this is an legal website awooh.com
No. You can only play solo zombies, the campaign, and combat training on cod if you don't have playstation network online
Yes you can create a Playstation Network (PSN) account without charge and except for your own internet service provider there are no charges to use the PSN
Worldwide it would be the Playstation Network without a doubt. They have more membership than Xbox 360 has sold consoles. In the USA it might be closer because there are more Xbox 360 consoles, but the Playstation Network is free and has the PS3 and the PSP and PS Vita using the network.
I'm sure that you can't but still you should try
yes you can if you sign into the playstation network and download a game
yes by buying it on the PlayStation network and putting it on the memory stick
You do not play that game online except on the PlayStation network as is an exclusive PlayStation game you can not go online without the PS3 unless your game is a PSP LittleBigPlanet game
Yes. PlayStation Network allows you to save your billing info (ie. a credit card) to your account, allowing you to buy games on the PlayStation Store on the PlayStation 3 and PlayStation Vita without the need for a prepaid card.
No they are downloads that must be done with Playstation Home but not for just to get to the Playstation Network. There is of course space taken up in you PS3 harddrive as files are created including the account information. There could be what is called a download each time you get information like your trophies status, but you do not download the Playstation Network and instead download the information needed.