I played.
I can tell you one thing, it freakin' sucks, I don't know what's the hype around it, but it does.
I couldn't stand playing it for more then 30 minutes, when I tried to start it again and give it a 2nd chance, I couldn't play for more then 10 minutes.
Y'see, the graphics are pretty good, and fit into the Korean Style of games.
The controls are decent, a very typical MMO set-up.
From what I remember playing this game, you create your character, and you're thrown into the game with no clue on what to do, no tutorial too, I believe.
Quests are semi-hard to find, and nobody really enjoys helping in the game (from my experience). Also, I think the map layout isn't very good, not very informative too.
Like GameDragon said, it's pretty much your typical Korean grinder.