The PSN is an online service, not a 'thing' on the console itself apart from the launch icon. It is what you do using the PSN that takes space up. Downloading games can consume several GB, for example. It's impossible to say without being specific.
Yes it is. The PlayStation Network does not charge to play games or use the network
No Live is a Xbox network the Playstation products use PSN or Playstation Network
Go to a retail store and purchase a Playstation Network Card
Yes when you are using the network
Sort of because when you use it online in the Playstation Network there is Playstation Home with has many different games and is like one huge game
Use the related link to the PlayStation network Complaint Form for individuals who are violating the Code of Conduct Standards for the PlayStation Network (See related question)
Yes it is still a beta program, but it is available to use or browse if you have the Playstation Network
Playstation Network Cards are not free and do not use virtual money but actual money
Millions go on the Playstation network around the world every day. It is never the same number and you did not even ask about the Playstation network and just the PS3. How would someone know when you use the PS3 except for online use
It means PlayStation Network and it is a site that the PlayStation games and consoles use with Playstations products online
it already came out if you use playstation network you can buy it from playstation store and yes it is for ps3
A PlayStation Network Card Code is the code on the back of a card that has PSN money on it. You can use it to buy games or other things on PSN.