- Do you tell your e-mail program to check for messages automatically every two minutes — and then disbelieve it when it comes up empty?
- Have you learned to hesitate before answering a new message so it doesn't look as though you were hunched over the keyboard, waiting?
- Do you secretly think of lunch as a time for your inbox to fill up?
But the clearest sign of e-mail addiction is simply to ask yourself, what is the longest you've gone without checking your e-mail in the past two months? Anything longer than a broken night's sleep is good.