Ms. Alkon writes that in our transient society we no longer have the constraints that existed when we lived in smaller groups and those who misbehaved were ostracized. Today you can be as rude as you like and get away with it because you’ll probably never see your victims again. This observation won’t come as a surprise if you’ve ever endured a train journey next to a person who yakked nonstop on a cellphone or had a concert or play interrupted by jangling mambo tones. When a woman next to me one night finally retrieved her cellphone, she shouted into it: “I told you not to call me when I was in the theater!”
But technology can also act as a weapon against rude behavior. “Webslapping is typically the best solution when someone is egregiously rude . . . ,” Ms. Alkon writes; “there’s a new sheriff out there, and it’s the YouTube video gone viral.”
Ms. Alkon delivers sound advice on navigating social-networking sites (she calls them “giant parasites targeting your personal information like tapeworms waiting for a move-in special on your large intestine.”), on observing email etiquette and on texting at the dinner table: “If you’re going to invite somebody to dinner and ignore them, at least have the decency to get married first and build up years of bitterness and resentment.”