I've been following and playing MMO games for years now, and for the most part, they've essentially been the same type of game. Take a long time grinding, doing "FedEx quests," and traveling; and dealing with server downtime and bugs. Guild Wars has slickly sidestepped most of these issues by being only partly an MMO. The cities and some far-flung locations act has hubs where players can socialize, trade, buy gear, sell loot, and gather up into parties, but everything outside of those relatively small zones is an instanced experience, where you either fly solo, with your four-person party, or with game-controlled henchmen.