In the wake of accusations flying after the US election results around purported fake news on Facebook, with claims that this may have swayed the results, the social network has announced that it will crack down on such sites. Google has also made a similar announcement.

It is not clear how successful these efforts will be - Google's top news link on Monday was still to a fabricated story stating that Trump won the popular vote by 700,000 votes, when in fact Clinton was in the lead by a similar margin.

These are examples of the wider trend of the social media 'echo chamber' - where tailored social feeds only show us one side of the news, reflecting back and reinforcing our own viewpoints, rather than providing balanced coverage. It seems it is now up to us to judge whether news from supposedly respected organisations is actually true - an indictment of the post-truth world we now inhabit?