The document discusses the emergence and impact of various social media platforms like Instagram, Snapchat, Yik Yak, and Whisper on business strategies and consumer behavior. It highlights Instagram's visual sharing features, advertising opportunities, and its appeal to marketers given its young, affluent user base. Snapchat's ephemeral messaging and unique features, along with other platforms' approaches to anonymous communication and advertising, underscore the evolving dynamics of social media in the context of business engagement.