Right now, I have copious amounts of spare time, but while I'm working I tend to play it mostly on evenings and weekends. Still takes up too much of my free time then, though.
I mostly roleplay, often accompanied by lengthy ooc /tell conversations and/or guildchat (but I don't catch many guildies on at once any more).
When I get the chance, I level as well. Once in a blue moon, I'll finish up one of the many unfinished quests on my list.
[Edit - Roleplaying, about 70%. Leveling, 25%, Questing, 5%]