AotR

To celebrate the release of The Lord of the Rings Online™: Siege of Mirkwood™, we’re inviting all former LOTRO subscribers to come play for free* from December 17-21, 2009! Hop back in with one of your old characters, or start a new one. And, you’ll get a +10% XP boost for all Mob (monster) kills.

http://www.lotro.com/news/377-welcomeback