2.  Biography
 The first steps of Twitter Creator
 Twitter innovation technology
 Forms to use Twitter
› Enterprise
› For standard users
 Resources

3. Jack Dorsey was born in November 19, 1976, is an
American web developed and businessman widely
known as the creator of Twitter and as the founder
and CEO of Square, a mobile payments company. In
2008, he was named to the MIT Technology Review
TR35 as one of the top 35 innovators in the world
under the age of 35. For 2012, The Wall Street Journal
gave him the "Innovator of the Year Award" for
technology.

4. Dorsey grew up in St. Louis, Missouri, and by
age 13, he had become interested in dispatch
routing. Some of the open source software he
created in the area of dispatch logistics is still
used by many taxi cab companies. He was
raised Catholic and his uncle is a Catholic priest
in Cincinnati. He went to Catholic high school at
Bishop DuBourg High School and attended the
Missouri University of Science and Technology
before subsequently transferring to New York
University, where he first came to contact with
the idea for Twitter.

5. In Oakland in 2000, Dorsey started his company to
dispatch couriers, taxis, and emergency services from
the Web. His other projects and ideas at this time
included networks of medical devices and a
"frictionless service market". In July 2000, building on
dispatching and inspired in part by LiveJournal and
possibly by AOL Instant Messenger, he had the idea
for a Web-based realtime status/short message
communication service.
When he first saw implementations of instant
messaging, Dorsey wondered whether the software's
user status output could be shared among friends
easily. He approached Odeo, who at the time
happened to be interested in text messaging. Dorsey
and Biz Stone decided that SMS text suited the status
message idea, and built a prototype of Twitter in
about two weeks. The idea attracted many users at
Odeo and investment from Evan Williams who had
left Google after selling it Pyra Labs and Blogger.

6. Dorsey, Stone and Noah Glass co-founded which then
spun off Twitter, Inc. In his role during the pivotal days of
the company's founding, a compilation chronicling the
originally named "twttr" and the time leading up to the
official launch, is shown in a timeline of tweets revealing
Twitter's beginnings. As chief executive officer, Dorsey saw
the startup through two rounds of funding by the venture
capitalists who backed the company. On October 16,
2008. Williams took over the role of CEO, and Dorsey
became chairman of the board. On March 28, 2011,
Dorsey returned to Twitter as Executive Chairman.
As the service began to grow in popularity, Dorsey
chose the improvement of uptime as top priority, even
over creating revenue – which, as of 2008, Twitter was not
designed to earn. Dorsey described the commercial use
of Twitter and its API as two things that could lead to paid
features. His guiding principles, which are shared by the
whole company and through its culture, are simplicity.

7.  Video of the Twitter evolution
› http://youtu.be/CG74Meq_KdI
 How To use Twitter for Business
› http://youtu.be/FsFmaCEOqyw
› http://youtu.be/uFxkkHsg-So
› http://youtu.be/8VdQprmIKYU
 How To use Twitter
› http://youtu.be/J0xbjIE8cPM