Interactive media includes digital products and services that respond to user input through various forms of multimedia content. The interactive media industry is worth billions annually and employs over 43,000 people, accounting for 22% of the total creative media industries. Interactive media is becoming integrated across many industry sectors. Twitter is a social networking website launched in 2006 that allows users to post short messages and has over 500 million registered users. Facebook is also a large social media website with over 1 billion users that generates $5 billion annually in revenue. Miniclip is an online gaming website launched in 2001 that is one of the largest privately owned websites and has profitable turnovers exceeding $20 million in recent years.