A recent study has shown that your Facebook 'likes' can lead to surprisingly accurate estimates of your race, age, sexuality, IQ and other personal information.

Predictably, there have been different reactions to the research. In The Guardian, James Ball warns, "The new Facebook findings could, in essence, mark the innocuous beginnings of a tyranny of data".

Helen Lewis, argues, however, that we have to recognise that the privacy we once had has changed, and we just need to relax about it.