Sure if they are actually friends send them an email or just text there cell phone. No you need your PS3 to message someone on the PSN
Just click add friends and then type the person's PSN username
yer very supid mate i could do that the minutie i had it next your ask if ps3 has psn
No, it costs $5.99 on the PSN
At the settings menu for the PS3. PSN settings are set in the master account after you are connected and logged into the account
Probably not unless they are Psn classics that work for ps3 and psp like final fantasy VII and VIII
A real life party? There is no such specific feature for that (yet), but you can send them a message through the PSN.
If your friend has a ps3 and you both have psn accounts then yes
No, the only way you can play a PSN demo is using a PS3 anyway.
Just click add friends and then type the person's PSN username
yes
Yes, you can get them from the PSN.
No the PS3 game addons must be downloaded from the Playstation Store
Yes if you can not sign in it is not a site wide problem. When you can not sign in your PS3 try the PSN network on your computer. The related link will get you there and if there are any site problems you will find a message
They will have PSN like the ps3
Over 70 million people have PSN accounts that are not PS3 accounts but allow the PS3 to connect to the Playstation Network (PSN) and use it
It's actually known as a PSN ID. http://www.us.playstation.com/PSN/mediago
You can message other people either by sending notes to other PSN users on your friends list, or via Skype.