The World of Warcraft team has announced that WoW Tokens can now be used for game subscription time OR for adding to a player's BattleNet Balance. BattleNet Balance can be used to purchase WoW services like character transfers or it can be used to purchase pets or mounts from the Blizzard Shop.
Players can stop by the Auction House in WoW and purchase a token which can then be used as described above. In return, the seller receives in-game gold to use for in-game needs.
You can learn more by visiting the World of Warcraft community site and by reading the handy FAQ on the site.
