The attention surrounding MMOs (massively multiplayer online worlds) has never been greater. But it’s not just role playing games along for the ride; non-game, avatar-driven virtual communities are just as popular, if not by more, and we’re not just talking Second Life here.
So in an effort to cut through the hype and glean some context, here are the most popular MMOs in terms of active users or subscribers, based on publicly available data. These titles may or may not be games, but the medium has expanded far beyond Tolkienesque fantasy worlds. They all are Mac-friendly/Web-based with exception of Guild Wars.