According to the article, "Flying in a Snit," in today's New York Times, they've gone out the airplane window. Writer Jane Levere notes that "etiquette in the air took a turn for the worse after 9/11." Since then long security lines and fewer flights, which result in near capacity planes, have amped up travelers' stress levels. Add to this young executives who talk incessantly, and loudly, on cell phones, and travelers who insist on cramming steamer trunks into overhead luggage, and traveling truly has become a test in patience.

The article didn't provide much advice on how to correct bad travel behavior. Judith Martin, author of Miss Manners' Guide to Excruciatingly Correct Behavior, suggested "firmly and politely sticking up for your rights." One seasoned business traveler took a more direct route, by noting a young business traveler's number as the man loudly left it on myriad voicemails in an airport lounge, and ringing him at 2 a.m. to admonish him for his rude cell phone behavior. Another frequent traveler just packs the earplugs. How do you deal with poorly behaved travelers when you're on the road?