The Trades Union Congress (TUC) has warned Facebook users to be careful and for employers not to sack workers for using the social networking tool in work time.

The TUC has written a guide on acceptable Facebook usage in the workplace in response to growing unease from organisations that Facebook is reducing productivity in the workplace. Facebook has become popular for social and professional networking.

Staff across the UK have already faced discipline or sackings because of the overuse of Facebook at work. Daily newspaper The Guardian reports that employees of Kent county council have been sacked.

With 3.5 million registered users in the UK the TUC describes Facebook as an accident waiting to happen. "Simply cracking down on the use of new web tools like Facebook is not a sensible solution to a problem, which in only going to get bigger," said Brendan Barber, General Secretary of the TUC. Instead he advises, "It is better to invest a little time in working out sensible conduct guidelines, so that there don't need to be any nasty surprises for staff and employees."

These are a set of good suggestions, so far IWR has not come across any figures which show how much work time and productivity has been lost to Facebook, but we have heard anecdotal evidence of sales being lost and workers spending considerable amounts of work time within social networks.

Policing social networks will be hard. IWR and many titles have promoted them as useful tools in the information landscape. Unlike games or even YouTube, it is difficult to see where using Facebook is purely for pleasure and where is a useful corporate tool. Add into the confusion the fact that many managers are using these tools to communicate with their teams both about corporate and social issues and the blur gets even fuzzier.

Ultimately, it will have to come from the top down within the organisation. Managers should be involved with these tools in order to garner the best from them, but they should also set the parameters for staff's usage and enforce it, before UK Plc is ground to halt by a winter of disreputable content.