Text messages - Digital lipstick on the collar - NYTimes.com

There is a question that has crossed the mind recently of anyone who has sent a cellphone text message while cheating on a spouse: What was I thinking?

Text messages are the new lipstick on the collar, the mislaid credit card bill. Instantaneous and seemingly casual, they can be confirmation of a clandestine affair, a record of the not-so-discreet who sometimes forget that everything digital leaves a footprint...