"XOXO" has long been the symbol for a kiss and a hug, but a pair of writers say that it's commonly becoming used as a way to sign-off an email message -- even at the workplace. How does your digital sign-off affect how others perceive you at the office?

Former CIA director David Petraeus communicated electronically with his biographer using a not so secure email technique supposedly favored by terrorists to cover their tracks.

If you've still got a Hotmail account -- and there are still millions of you out there -- take note. As of today, Microsoft is phasing out its free email brand. The company is renaming the service Outlook.com and adding features to better compete with Yahoo and Gmail.

The big red retailer is sick of showing off products just to lose the sale to the e-tailer.