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Attends Missouri University of Science and Technology
Jack enters his first year at Missouri University of Science and Technology. -
Unveils his first website
His company is used by dispatch couriers, taxis, and emergency services. -
Drops out of NYU
Jack drops out of New York University to pursue his dispatch software company -
World's first Tweet
Jack posts the world's first Tweet. -
Top innovator of 2008
Named one of the top innovators of the world under 35. -
Jack becomes chairman of the board
Evan Williams takes the role of CEO and Jack moves over to chairman of the board. -
105 million users
Twiiter hits 105 million users who, collectivly, post 55 million times a day -
Square
Jack launches Square, an electronic payment service. Square allows users to accept credit cards through their mobile phones. -
#392/400 Forbes
Jack takes the spot of 392 out of 400 on the Forbes 400 list.
