Valve has announced the beta launch of Steam Trading Cards, a new feature that lets users collect and trade cards which can be acquired in-game.
Cards may be crafted into badges that can be used in-game as well as showcased on your Steam profile. They’re not like the badges that Steam currently has; crafting game badges will yield awesome items like emoticons, profile backgrounds and even coupons for the store. Badges also gain XP which will contribute to your overall Steam Level.
You can sign-up for beta access at the official website.