Brits spend less time social networking than their US counterparts, says OfficeMetrics.

According to the research company, on average, Brits spent 44 minutes a week on sites such as Facebook, MySpace and Twitter in April 2009, compared to Americans who spent over two hours and 20 minutes on the sites. That's three times more than UK-based social networkers.

"Only a small percentage of users are spending excessive time social networking in the office," said Jon Mulligan, managing director of OfficeMetrics.

"Blocking these sites in the workplace is certainly not the answer as this can result in a further lowering of morale and can impede collaboration and creativity and can reduce productivity. We would recommend that employers allow workers to access social networking sites, whilst ensuring that this privilege is not abused," said Mulligan.