"Another distinguishing hallmark is monster play. Once your hero character hits level 10, you can create a secondary monster avatar that's already at the maximum level of 50. For better or worse, you can't play as a full-fledged evil character. However, you can create a monster and enter the Ettenmoors, where a separate set of quests and advancement mechanics await you. This is also where The Lord of the Rings Online's main player-versus-player component comes into play, as hero characters at level 40 and higher can head out there and engage the player-controlled monstrosities. It's a fairly clever system, yet at this stage in the game where few hero characters have hit the necessary level, it's hard to say how successful monster play will be in the long run. At the very least, it gives lower-level players a chance to experience high-level PVP and raid content at an early stage."
Enjoy, straight from gamespot.
Reputation: 14I'd wait, i've played LOTRO, and it does lack a little bit. I'm sure it will be better in the future..