Are you a savvy surfer?

UK psychologists have found a strong link between excessive internet use and depression.

Researchers reported that 1.2% of those surveyed were "internet addicts" and a small number had developed a compulsive internet habit, replacing real life social interaction with online chat rooms and social networking sites.

But how much do you know about the technology that has changed the way we live?

As you surf the information superhighway, are you zooming down the outside lane or stuck on the hard shoulder?