Half of workers in the United Kingdom have been banned by their employers from using Facebook and other social network sites in their offices, according to a report.A survey of more than 2,000 employees for computer services provider HCL Technologies found that many bosses feared their business reputation was at stake by staff using social networking sites.Chief executive Vineet Nayar said: “It is quite remarkable that in this day and age, many employers are still putting their employees’ interests as a low priority by not allowing them to use sites like Facebook.“While we always advocate responsible use of social networks in the office, banning them outright will impact employees’ approach to work in a negative way, having a detrimental effect on the business as a whole.”Source: ITN