[Blarg]

Those games have appeal for the social aspects mostly. To have any more appeal, they have to be extraordinarily well-designed. Otherwise you finally get all your spells and abilities and get used to them, mastering your character and thereby outgrowing all your challenges. And you can get very far in those games without actually really mastering your character, either. I don't think there's the depth in gameplay design yet to support those games in much more than their social aspects.