Twitter

Twitter

Founded in 2006 by Jack Dorsey, Noah Glass, Biz Stone and Evan Williams, Twitter is an online social networking and microblogging service that enables users to send and read 140-character messages called tweets. The service gained worldwide popularity, reaching 500 million registered users in 2012.

In 2012, Twitter partnered with Yandex, a Russian search engine, and acquired video company, Vine, which launched in January 2013. Twitter released Vine as an app allowing users to create and share six-second looping videos.

In 2013, Twitter acquired Trendrr and MoPub. Twitter made an initial public offering in November 2013, opening shares at $26 and closing at $44.90, giving the company a valuation around $31 billion.

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