[quote name='Gamer SDP']Now on to questions.
What exactly is the purpose of a "User" and how is it different from a PSN ID? The one I had was a default "User1". I also noticed I could create more users while still signed in to my PSN ID.
"Users" seem to differ from guest accounts on a 360. There can also be offline profiles on 360 which can later become a Gamertag (assuming the string does not exist as a Gamertag already). How are game saves and trophies work/affected by different Users on the same ID?[/quote]
You can change User1 to your name. Users under first one are guest accounts, or sub accounts. You can name them anything, but each one can only be linked to one PSN ID. If they are never linked to a PSN ID, they are just that, guest account. Which at any time could later become a PSN ID.
If you are playing a game on main profile, and player2 selects their profile for co-op games, they will not be signed into PSN, only 1 active PSN user online at a time. Their character data will be saved on their profile, for later trophy hunting if want.
Any 2nd/3rd/etc user/profile on your system can link to your SO/friend/family members PSN ID. They can earn their own trophies while on that account, but not at same time you are on main account. If they get their own PS3, they can use that same PSN ID, and after syncing trophies on your PS3, it should show up on their profile on their PS3.
Any co-op game that lets you pick your profile in-game, will save their info on their profile even if you are the active profile. Any game they play while active on their profile also saves their own save files under their profile.
How does moving/transferring IDs and profiles work? I don't mean as in a system transfer but like going to a friend's house.
Are game saves copyable or only moveable? Can they be moved/copied to a flash drive?
I hope someone answers my system transfer profile question up above^
But I do know that most saves you can backup on a USB. Some (like Dungeon Defenders) are locked and you cannot backup unless you have PS+. So once any non-protected save file is on the USB you can take your save files to a friends, and as long as you have your user/profile and PSN ID set up on their consoles, it should work. I'm basing that guess off PS+ Cloud. PS+ Cloud can do just that, but with save protected files too.
Is there a way to play offline once signed into a PSN ID?
Yes. On the XMB there is a option called "Account Management", top option above trophies. Press Triangle and select "Sign out". You'll be offline.
I hear most DLC is "region locked". What does that mean?
A US DLC code is redeemed/downloaded on a NA PSN ID on a NA console in the US. Would the DLC be usable if the person had a PAL game disc?
A European DLC code redeemed/downloaded on a EU PSN ID on a NA console in the US. Can a person use this content on their main US PSN ID if they have a PAL game? What if they have a US copy?
If you buy/have DLC from US store but have a PAL game disc, no it shouldn't work. In fact, you can't even redeem EU DLC unless you are on a EU account. You'll get error message.
What does work is make a new profile linked with EU account, get/download EU DLC, but it will only work on PAL game disc.