Facebook is a website that allows people from around the world to network with friends, companies, and organizations. Users can post updates, ask questions, play games, and share videos, photos, and links.
Twitter is a micro-blogging site that allows users to post updates in 140 characters or less. Users can share links, videos and photos, while tagging their posts with searchable keywords.
Instagram is a photo sharing site that allows people to share and edit images with others from around the world.
YouTube is the world’s largest video sharing site. Users can view videos, upload videos to their personal channel, subscribe to other channels, comment on videos, and more.