| Type | Public |
|---|---|
| Traded as | NYSE: TWTR |
| Foundation date | March 21, 2006[1] |
| Headquarters | San Francisco, California, United States[2] |
| Area served | Worldwide |
| Founder(s) | Jack Dorsey, Noah Glass, Evan Williams, Biz Stone |
| Key people | Jack Dorsey (Chairman) Dick Costolo (CEO) |
| Industry | Internet |
| Revenue |  US$317 million (2012)[3] |
| Employees | 2,000+ (2013)[4] |
| Subsidiaries | Vine |
| Website | twitter.com |
| Written in | JavaScript,[5] Ruby,[5] Scala,[5] Java[5][6] |
| Alexa rank |  11 (February 2014)[7] |
| Type of site | Social network service, microblogging |
| Registration | Required to post, follow, or be followed |
| Users | 200 million (active February 2013)[8] |
| Available in | Multilingual |
| Launched | July 15, 2006[9] |
| Current status active |
| to signup/login Twitter |
|---|
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