The document summarizes the findings of a study on social media usage among the Fortune Global 100 companies. It found that over half (79%) use at least one major social media platform, with Twitter being the most popular (65%). However, only 20% use all four platforms analyzed (Twitter, Facebook, YouTube, blogs). Usage varies by region, with the US having the highest rates across most platforms. Those that are active often have multiple accounts and are engaging with followers by responding to comments and retweets.