It depends.
Its a functioning game, with a lot of individual skills to grind if that's your thing, but the community...
Well, to be blunt, it isn't very good. I'd suggest Mabinogi over it, if you like the game style. I just have never heard anyone, of all the people who I know spent a lot of time on the game, to feel like it was really worthwhile. At least, as far as MMORPGs go.
I can't speak from personal experience with the game; I got so bored with it, I couldn't take it.
This was a long time ago, though; according to its Wiki, it would fall under, "Runescape classic."