Survey claims twitter costs the economy £1.4b

In its latest swipe at social media,the Telegraph is reporting this morning that twitter costs the economy nearly £1.4b.

According to a survey by Morse, the IT services and technology company,

More than half of office workers use sites like Twitter and Facebook for personal use during the working day, and admit wasting an average of 40 minutes a week each.One in three of the 1,460 office workers surveyed also said they had seen sensitive company information posted on social networking sites, leading to fears about how workers use the internet.