Twitter is an social networking service that enables users to send and read short 140-character messages called “tweets.” Registered users can read and post tweets, share tweets (retweets or RT), favorite tweets, or make lists of their preferred twitter users.

Users can access Twitter through the website interface, SMS or mobile device app. More than half of Twitter users access the service through a mobile device.

Many members use Twitter applications such as Tweetdeck or Hootsuite to read, write, or share content on the social network. These applications make it easier to publish and schedule content, monitor brand mentions, or search for content and influencers.