what Twitter is ?

Twitter is a website, owned and operated by Twitter Inc., which offers a social networking and microblogging service, enabling its users to send and read messages called tweets. Tweets are text-based posts of up to 140 characters displayed on the user's profile page.
The website is based in San Francisco, California. Twitter also has servers and offices in San Antonio, Texas; and Boston, Massachusetts. Twitter, Inc. was originally incorporated in California, but as of 2007 is incorporated in the jurisdiction of Delaware.^[7]
Twitter was produced in March 2006 by Jack Dorsey and launched in July. Since then Twitter has gained popularity worldwide and is estimated to have 200 million users, generating 65 million tweets a day and handling over 800,000 search queries per day.^[5] It is sometimes described as the "SMS of the Internet".^[8]

Contents

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• 1 History
  • 1.1 Creation
  • 1.2 Reaction
  • 1.3 Leadership
  • 1.4 Growth
• 2 Features
  • 2.1 Messages
  • 2.2 Tweet contents
  • 2.3 Rankings
  • 2.4 Adding and following content
  • 2.5 Authentication
  • 2.6 Demographics
• 3 Finances
• 4 Technology
  • 4.1 Implementation
  • 4.2 Interface
  • 4.3 Outages
  • 4.4 Privacy and security
  • 4.5 Open source
  • 4.6 URL shortener
  • 4.7 Decentralized architecture
• 5 Uses
• 6 Reception
  • 6.1 Change of focus
• 7 Criticism
• 8 Social impact
• 9 Censorship
  • 9.1 Censorship of Twitter
  • 9.2 Alleged censorship of WikiLeaks by Twitter
• 10 See also
• 11 References
• 12 External links