Facebook tells US tax bods: Swear to God, we were only worth $6.5bn in 2010 because we were menaced by... MySpace and smartphones

IRS wants Zuckerberg's empire to cough up $9bn in back taxes

Facebook has told a court the reason it valued itself at just $6.5bn back in 2010 is not because it was seeking to avoid paying billions in extra tax, but because people had started using their mobile phones more. At the time, the antisocial goliath was reliant on ads on its desktop site."