Cell phone owners currently enjoy a kind of privacy through obscurity: Wireless numbers aren't listed with directory assistance. But now that Cingular Wireless, Sprint, Nextel Communications and other ...

You must have received a call from an unknown number. Some of them would be spam or promotional, and you would dismiss them. Often you would have suspected them of being someone known or a fraudulent ...

Ever since I got a flip phone a long time ago I was surprised that I was not able to block numbers that weren't in my contacts list. Those dumb little phones were packed with 100 useless features, but ...