“I guess you could call me a professional gamer now!“
Steam started giving out trading cards recently, you get them while playing some games.
The cards are also given for achieving certain things in those games that support it.
The cards are used by folks to make badges to show off in the forums, buy special online game equipment, etc.
I Don’t have a use for them so I sell them to those who do! When I sell them money is added to my Steam wallet so I can buy more games! Sweet!