One of the popular ads debuted at the 2011 Super Bowl broadcast was titled "Reply All," by Bridgestone Tires. Two men are working at their computers in an office cubicle. One sends an email to the other that triggers a smile—followed suddenly by alarm. "Rod, you sent this email 'Reply all.' You hit 'Reply all'!"

Rod panics and sprints down the hallway. Screaming at the top of his lungs, he runs through a meeting room grabbing laptop computers away from those seated at the table. He dashes between offices carrying away desktop computers, still screaming. He reaches through a window into a home office and takes the laptop from a woman typing at a desk, still screaming. He leaps up the stairs leading to an office building knocking cell phones from people's hands.

On he goes, screaming like a man who has lost everything, attacking the computers and hand-held devices of a man walking in a parking garage, another man eating in a restaurant, a man hiking in a forest, a man sitting on a park bench. Finally, climactically, Rod rips a bundle of wires out of the wall of a computer electronics room, sending out a shower of sparks.

Like Rod with his email, have you ever communicated anything that you later regretted? Have you said anything you wished you could take back?