So many Steam cards already?

So... I just found that I have 500 games with cards. It's a giant difference from beginnings when used to have cards only Valve games and few chosen others. :)

To celebrate it a little, I have few leftover backgrounds and coupons I'm not planning to use, so if you want any of those I have (except the one I use - "Bastion - School of Squirts"), send me a trade offer (one background per person).

EDIT: Okay, I guess all great ones are already gone (you can still get coupons), traded +-50 backgrounds. :)

EDIT2: All backgrounds gone, removing trade offer link and closing thread. :)