Praised for innovative simplicity and an open approach to technology development, Twitter welcomes the challenge of becoming the world's most significant device-agnostic social messaging service.

"Lee's deep experience creating sophisticated back-end software that enables really simple experiences for users is the perfect match for Twitter." Asserted Jack Dorsey, Twitter CEO, "We were struck by Lee's enthusiasm for building global systems that operate at scale and impressed by his outstanding leadership skills."

Mr. Mighdoll is recognized for his diverse accomplishments at General Magic, Apple, ObjectSpeed, and WebTV. He is named as an inventor on more than a dozen patents, and is a graduate of Brown University.

"The Twitter communications phenomenon is already generating great excitement among Internet and mobile users. I'm looking forward to an exciting year in 2008. We'll be growing our team to create a state of the art distributed server system, to build great user experiences, and to support the vibrant Twitter partner community," said Lee Mighdoll. "The most exciting part is that we've only just begun -- Twitter has tremendous potential."

About Twitter, Inc.

Twitter is a social messaging service which connects people over multiple devices including mobile texting (SMS), instant messaging (IM), web browsers, and hundreds of third-party applications due to a popular programming interface for developers. Founded in 2007, Twitter asks everyone "What are you doing?" and routes the short answers in real-time between contacts around the world.