Heh, I just started, and it's great fun. I like the fact that I don't have to pay monthly fees (can't justify the monthly cost with family and work and all), and I can play with guildmates (thanks Niner!) or I can go solo and take a bunch of Heroes and henchmen if I just want to take my time to meander around and explore the place or kill off a bunch of Iboga to find that last stupid Iboga petal (finally got one today, heh). I'm playing an elemental/dervish (because I wanted to try those out), but I'm having such a good time nuking everything with Firestorm and Ebon Hawk (it's a real spell skill, honest!) that I'll likely change my secondary profession to something more spell-casting related and just play a dervish for my second character.
Having never played any kind of MMO before, I've discovered I have a lot to learn. MMO-speak is its own language.