‘Microsoft’s social network, LinkedIn, is unglamorous but its business-to-business ads allow it to monetise the time users spend on it at a rate roughly four times that of Facebook, estimates Andrew Lipsman of eMarketer. It generates more revenue than some medium-sized networks including Snap’s Snapchat and Twitter. <...> So far [Apple] is only dabbling in ads and does not report sales figures. But Bloomberg reported recently that Apple’s ad business was already generating sales of $4bn a year, making it about as big an ad platform as Twitter.’

Twitter is now a unit of being moderately unsuccessful at advertising.