Valve has opened the doors to trading in-game items and game gifts with the official launch of Steam Trading. Right now, gamers can trade items from Team Fortress 2, Portal 2, and Three Rings co-op adventure Spiral Knights.
Steam Trading started its life with a four week beta, during which time over 1 million items and game gifts were traded. Although at launch only three games are available to trade items from, Valve is working on getting more games from third parties in the coming months.
Here’s how it works: Any game you’ve purchased from the store as a gift, or received as an Extra Copy, can be traded to other users. They can be used to trade for other Gifts, or for items in Team Fortress 2, Portal 2, or Spiral Knights. Valve has also added a new checkout option to the Store when purchasing a gift so you can save it for trading or sending later, to support users who want to save games for trade fodder.
Contrary to what you might think, this doesn’t include used games. The Steam Trading FAQ specifies that only games that have been bought as a gift and never played can be traded. Once the Steam Gift is opened and added to your game library, you won’t be able to trade it again.
Valve is working on privacy settings right now, so your Steam Gift Inventory may not be visible to others. But the rest of your inventory will obey your preset privacy settings.
Support for Steam Trading has been added to the Steamworks SDK, so game developers can add Steam Trading directly into their games as well.
In the same Steam Client update that houses the Steam Trading, Valve also included a new Friends Tagging feature. You can right-click on any friend and select ‘Tag As…’ to choose a category for them. Friends can be tagged in multiple ways and will then show up several times in your friends list, once for each tag.