Welcome to the official launch of Steam Trading, which allows you to exchange In-game items and Gifts with everybody in the Steam Community.
Now you can trade Steam Gifts and in-game items from Valve games Team Fortress 2 and Portal 2, as well as from Spiral Knights, the cooperative adventure from Three Rings and Sega. We’re working with other developers to incorporate Trading and Inventories into their games, so keep an eye out for future announcements in the coming months.
Your Steam Community profile now has an item Inventory, and you'll be able to view the Inventories of every public profile in the Steam Community.
Click over to the Steam Trading FAQ for more information, and get trading!