i have been out of it outside of small trade for about 6 months now. this is due to hardware complications and not the game itself.
last i played it was still lively, and i played on 1 of the smaller servers.
trading in that game is.... different, to put it one way. you'll find it much easier to buy things than to sell it due to the mass cash shopped items.
it's a decent mmorpg, but i would say too late to start if you are aiming for top-tier without spending a ton.