"the purpose of this is to save your game data for whatever reason you choose. it is mainly used for peace of mind - if your PS3 breaks, you can then copy this game save to a new PS3. game saves will only work on any one PSN account. for instance, if your PS3 breaks and you go to restore your old game data on a new PS3, your new user on your new PS3 must have logged into your old playstation networ" . . . .