Steam – Can the same Social Club account be used for the Retail and Steam versions of GTA V

Steam has built-in support for letting you specify command-line args for games.

Right-click the game's entry in the Library and click Properties. On the window that pops up, there's a button named "Set Launch Options...", and clicking that gives you a textbox that lets you type in command-line arguments that Steam will use when launching your game.

You can include the entries you would've had in commandline.txt in there (all on one line, of course, since the textbox in Steam is one line only).

In order to use any piece of Xbox Live's uploading service, you must have an Xbox Live Gold Account. It technically falls under the Multiplayer aspect, as far as I know Silver Accounts are only allowed to purchase games over Live's Marketplace, Send Messages, and at one point in time they were allowed to join Parties but I am not sure that this is the case.

Long Answer Short, Yes.

You need Gold for the leaderboards too. Anything that requires the cloud save storage needs a Gold subscription, so that includes Snapmatic pictures and the iFruit app. You can train Chop and order customisations on your iPhone/iPod but unless you have a subscription the game won't load them.

--tommysalive of GTAForums.com