Peter Petrovski

Sir Tim Berners-Lee had an appearance at the opening ceremony, alongside a NeXT cube. The machine was used by the Brit to invent the modern Internet protocol upon which the Web is based.

Berners-Lee then live-tweeted from the the stage: This is for everyone.

And thus the symbolic arrival of social media to the Olympic stage. As NBC has realised, it’s not going anywhere, and it’s changed everything.