Social media is an umbrella term that encompasses various online activities involving technology, social interaction, and sharing content such as words, pictures, videos, and audio. It includes social networks, where people with common interests can connect and share with their network; content communities where users can upload and share videos and documents; blogs and microblogs which allow people to publish writings and share information; virtual game worlds that take the form of interactive 3D environments; discussion boards and forums for holding online conversations around specific topics; and collaborative projects where people can work together online to achieve shared goals.