BF3 key to trade?

first of all, i'm not begging for a key, just need a key for a friend (here in Uruguay most people didn't knew about the free origin keys for BF3, so now there's a lot of friends wanting to play it but without the game.

I know for trades its steamtrades, but steamgift forum it's much more active, so my chances to get a key are probably better here than on ST. (BTW i already post on almost every post that has BF3 to offer)

this is my games library to trade on ST.

Plase be reazonable with trades, and really hope this is not agaisnt the rules.