Here's a little description of how I run games, and how I prefer people to play. This structure is courtesy of Tony Lower-Basch.
Why should you care how I run games? Because if you can't play a game by these rules, you shouldn't play in this game. I want to have all of the players contributing to the structure of the story, and actively working to make it entertaining for everyone. I have no sympathy for anybody who thinks that their character and their enjoyment are the only thing that's important. That's just selfish. Play by the rules, and help increase everyone's enjoyment, along with your own.
Without further ado, the commandments: