Currently there is no information that says Xbox Live Gold will be for free, but that can change in the future.
Its free. Just create a gamertag. (remember: Gold is the one that lets you go on xbox live)
Go on your xbox go on profile and go on join xbox live and you r done lol have fun on mw2 online (amazing game)
yes you need xbox live to go into parties
Xbox premium does not exist. You have Xbox silver or Xbox gold. The gold allows you to go online. Silver allows you to view content on marketplace and thats about it.
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Yes, once you have xbox live you can download Netflix for free and set up an account or use a preexisting one.
No.
If you have Xbox Live you can go onto the Xbox store and sometimes get free game demos or games.
Go to Xbox Live Arcade, click on a game, and download the free demo.
All you have to do is create the account and it automatically becomes what is call an Xbox Live Silver Account. You don't need any credit card or subscription card.
If you have an Xbox Live account (must be Gold) you can just go to multiplayer in the main menu then go to Xbox live and it will put you into a lobby from there.
When your Xbox live gold expires, your account will be silver. This means you have some features which you can access on Xbox live but not actually play online. Just buy a gold membership to go back online.