|Headquarters:||San Francisco, CA|
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. Twitter also has servers and offices in San Antonio and Boston. Twitter, Inc. was originally incorporated in California, but as of 2011 is incorporated in Delaware.