People tend to think that e-mail at work is private. But Clark recently read about a company that uses software to temporarily detain every e-mail leaving its network. The outgoing messages are reviewed by an artificial-intelligence program during the hold time. The program looks for keywords -- such as a competitor's name -- and flags suspicious e-mails for review by an actual person. What if you use third-party e-mail accounts like Yahoo! or Gmail at work? You still don't have any privacy rights if you access them through your employer's network. So make sure you're not sending anything that could get you in trouble. Speaking of compromised e-mail security, have you heard about the Spirit Airlines CEO who received a customer complaint forwarded to him internally by a colleague? Instead of just replying directly to the colleague, the CEO hit "reply all" and sent a curt reply back to the already disgruntled customer and others. The gist of the reply was that the airline didn't owe the customer anything for his troubles and that he would be back again when the airline saves him a penny. Clark thinks people should start treating e-mail like they would a party line or message board. Know that what you e-mail can be seen by unintended people. Meanwhile, Yahoo! has launched some new technology that combines IM, text messaging and e-mail capabilities into one. So for example if you get an e-mail, you can respond to the sender via text or IM; if you get a text, you can respond by e-mail or IM and so on. This is great for people like Clark who use all three platforms regularly.