Interactive media refers to digital computer-based products and services that respond to user actions by presenting content like text, graphics, and video. The interactive media industry is worth billions annually and employs over 43,000 people, representing 22% of the creative media industries. Facebook is a public, worldwide social network with over 1 billion users and $5 billion in revenue that employs 5,000 people, and owns Instagram. Twitter is a private, worldwide microblogging network that allows users to send tweets, employs 2,000 people, and has $140 million in revenue, and owns Vine.