Over the years I have tried to find a good MMO that's F2P and just have never succeeded. I play WoW actively, but I want something new I can play on the side. All the F2P's I've played have been like "stand in front of this guy and spam 1-2-1-2-1-2-1-2-1-2-1-2", with saying that it would be awesome to find a F2P MMO that actually takes some skill and some "don't stand in the fire".
Another thing I like is some customization. Maybe a game with some different races (not too important) or at least something along the lines of picking a class and putting points towards a talent tree or skill points.
Let me know.