Twitter office

Twitter is a public short messaging service using a web interface, SMS, instant messaging or third-party client programs. The publication of short notes in blog format is called "microblogging". The service is free of charge. The use of SMS is charged by the operator according to the user's tariff plan.

Twitter is owned by Twitter Inc, headquartered in San Francisco, California. Twitter Inc also has servers and offices in San Antonio, Texas and Boston, Massachusetts. As of 2012, the company employs over 900 employees.