Flying can be tense, and shrinking seat sizes don't help. In fact, research suggests that crowded flights can lead to a breakdown of normal social functioning among passengers. But flying doesn't need to bring out the worst in you.
If you're lucky enough to be granted entry to the world of private plane travel, think of it as an invitation to your host's home in the sky. A little jetiquette goes far beyond not sticking your gum under the seat.