It's all fun and good until someone tweets the wrong thing.
When the Olympics start Friday, social media is likely to light up with pride for sports, countries and various teams as they come together in Rio to compete for the next few weeks. But your local plumber will have to sit it out.
But this Olympics is happening at a time when a billion people are using Facebook on their mobile device every day. Social media has become so pervasive that when you add in Snapchat and Twitter, the combined populations of people using these services is larger than any country on Earth.