You can transfer your World of Warcaft characters between servers as of today, but it’ll cost you $25. You also can’t be the leader of a guild or do it but once every 6 months. You also still can’t have characters of different factions on the same server.
[url=http://www.kotaku.com/gaming/wow/wow-characters-transfers-finally-live-184212.php]WoW Characters Transfers Finally Live[/url] (Kotaku)
