The popular free application for sharing photos and videos Instagram marked an important stage – the number of active monthly users has exceeded 500 million people. It is twice more than it was two years ago. The growth rate of number users of the service is constantly growing – the last 100 million users, the company received much faster than the previous 100 million, as can be seen in the image above. Approximately 80% Instagram users live outside the United States. For comparison, this figure was 75% in September last year. The new achievement also means a significant increase breakaway from Twitter, which has 320 million monthly users. Instagram – a free application for sharing photos and video with social networking elements that lets you take pictures and video, apply filters, and distribute them through its service and a number of other social networks. The service was launched in October 2010 and very quickly gained popularity among mobile users. In April 2012 the Instagram was acquired by Facebook. The purchase price was US $300 million of money resources and 23 million shares of the company. At that time it was the largest transaction in the history of Mark Zuckerberg’s company.