Facebook: 350 million customers served...

This is just one of the many staggering statistics that have been published recently by Facebook as it celebrates its latest user milestone.

Others amazing stats include the fact that 23m people in the UK are registered Facebook users, and that 50% of UK those users visit daily, with an average time of 55 minutes spent per day on Facebook.

Now maybe my maths is a little suspect, but I think this means that around 10 million hours per day are spent on Facebook. Assuming the average working day is 8 hours, that is around 1.2 million working days. The working population is 33 million, so I amateurishly conclude that for every hour the average UK worker spends working, they also spend about three minutes checking for updates on Facebook. Incredible.