I should note, one statistic I do have access to right now is what percentage of players in a realm play either only on that continent, or only within that one realm. On Atamara, Darka is well up there in that statistic, with 13% of its players playing nowhere but Darka, though Carelia and Talerium have it solidly beaten, with 20%. (That's not because of new players, either; the statistics take that into account.)