Businesses are missing out on the huge potential that social networks present, a leading information technology company has warned.

Researchers for Gartner found that huge opportunities for improving the management of large firms exist.

"Businesses which harness how employees use these sites stand to increase savings, productivity and profits," said Gartner researcher Jeffrey Mann.

He told the BBC the challenge was how to apply this to the corporate world.

The Gartner survey discovered that social networking sites, instant messaging email, chat and file sharing are attracting significant levels of interest online.

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IBM has been encouraging social networking among its employees with in-house versions of Web 2.0 hits such as Facebook and Twitter

 Let's say you're a big Facebook user. One day you get an e-mail from your company. It invites you to an in-house social network, a Facebook for just you and your colleagues. Do you sign up? What about if you learn your boss is on the site? Do you "friend" her? Will you let her see those vacation pictures from Club Med?

Social networks in the corporate world involve very different dynamics, and scientists at IBM (IBM) Research's Collaborative User Div. in Cambridge, Mass., are learning all about them. Over the past two years, IBM has been busily launching in-house versions of Web 2.0 hits. "We're trying to see how things that are hot elsewhere can be fit for business," says Irene Greif, an IBM Fellow who heads up Collaborative User Experience.

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 Facebook, MySpace and other Web sites have unleashed a potent new phenomenon of social networking in cyberspace. But at the same time, a growing body of evidence is suggesting that traditional social networks play a surprisingly powerful and underrecognized role in influencing how people behave.

The latest research comes from Nicholas A. Christakis, a medical sociologist at the Harvard Medical School, and James H. Fowler, a political scientist at the University of California at San Diego. The pair reported last summer that obesity appeared to spread from one person to another through social networks, almost like a virus or a fad.

In a follow-up to that provocative research, the team has produced similar findings about another major health issue: smoking. In a study published last week in the New England Journal of Medicine, the team found that a person's decision to kick the habit is strongly affected by whether other people in their social network quit -- even people they do not know. And, surprisingly, entire networks of smokers appear to quit virtually simultaneously.

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