I had an idea...someone tell me if it wont work.
What if instead of using multiplayer functions, an db mmorpg operated on a massive SQL database, that stored information such as all player's strength, x+y coords, sprites, etc? [TheCodingArea has a wonderful plugin for this.] My guess is that the numerous SQL queries this would call for would slow down the game to the point of not being worth playing, but still, I think this idea is worth pondering. If it could work, a world could hold MANY more than 256 people, and there wouldn't have to be a "master" server computer that all "client" gamers connect to. It would sure make DB multiplayer a hell of a lot easier.