I'm trying to figure out how games like Words with Friends has their app and servers set up so they can do multiplayer games when servers fill up and new ones get turned on. For example, I'm told by the person helping me program my app that if users 1-10,000 are set up on Server A, and users 10,001-20,000 are set up on Server B, people on Server A can't find people on Server B to play each other. That's my naive interpretation of the situation. There must be a way for that bridge to be set up, otherwise WWF wouldn't be possible. Can anyone offer some advice?