The document discusses the rise of social media and how it has revolutionized communication. It notes that social media platforms like Facebook and Twitter have seen extremely rapid growth, gaining tens or hundreds of millions of users within just a few years. The document also discusses how organizations like universities and companies are now actively using social media to engage with current and prospective students/customers. Specifically, it provides an example of how Carnegie Mellon University grew its online presence and brand awareness through creative use of YouTube and other social media platforms.