Social media refers to online technologies and practices that people use to share content such as text, images, video and audio. It allows for the creation and exchange of user-generated content. Social media is fundamentally changing how people learn, read and share information by transforming one-way communication into dialogue and democratizing information. Some key differences between social media and traditional media include lower costs of production and publication for social media, faster response times, and the ability for social media content to be updated versus traditional media content which cannot be altered once published. Social media also has fewer responsibilities around content quality and relies more on interactions and discussions between users to spread information.