Okay well, this is a bit of a quicky but I realize some people may need it for some games, or for convenience, commercial games sometimes require it to.
That is, saving in the player's APPDATA directory instead of the game's root folder, which can be useful for still having save files easily accessible after a game uninstall/reinstall/carry-over from an old game/whatever. Other programmers can easily help with other save file things since you know exactly where to look now.