Ok let me get this straight.

[Commando]

So When my XBOX Live Gold promo ends after 1 month and my account becomes Silver.

I will lose:

1) The ability to play all games online, or is it dependant upon the content and/or the game.

2) Would that include XBLA games?

and 3) what else?

I think the gamerscore card stays in-tact with the achievements.  Is that notion correct as well.

Thanks for the Help!