The document discusses the growth of social media and its impact on communications and business. Some key points: - 2 billion people now use the internet globally, and social media engagement continues rising, with over 2/3 of internet users on social platforms. - Social media has democratized communications, allowing anyone to share content with just a few clicks. It is ubiquitous but not monolithic, with many different platforms and formats. - Major social media companies like Facebook, Twitter, and LinkedIn have grown enormously, some going public with multibillion-dollar valuations, showing the major impact and business potential of social media.