Who's listening?

Is anybody listening?

Revelations that the government is snooping on U.S. citizens is evidence that phone conversations provide useful information indeed.

Clues to how the government may be doing that lies with companies such as CallMiner in Fort Myers. Using sophisticated speech-analytic software it has developed, the company mines 100,000 hours of recorded phone conversations every day for big corporate clients such as Web merchant Amazon, banking group HSBC and insurance giant Axa.