During a panel at GDC Online 2010 Producer Kate Paiz announced that Lotro has doubled its revenue and created over a million new accounts since going F2P early last month.
Paiz also shared that 20% of LotRO's former players have returned to the game since the switchover, and that the game has seen a 300% increase in peak concurrency, with three times the number of players online simultaneously, and a 400% increase in active players total. 53% of players have used the in-game microtransaction store.
Spotted on joystiq.com