Rome may not have been built in a day, but Twitter was built in just two weeks.
During an onstage interview at a Twitter off-site meeting today, co-founder Jack Dorsey (who is also the founder of the mobile payments company, Square) recalled how long it took him to build the first version of the microblogging service: two weeks, according to a tweet from Guy Yalif, a member of Twitter's product marketing team who was present at the event.
As has become part of modern Internet legend, Dorsey built Twitter as a side project while he was an employee of Evan Williams' and Biz Stone's (now defunct) podcasting company Odeo. Together, the three men went on to turn Twitter into a stand-alone business.
Today, more than half a billion people have created Twitter accounts, and last month, current CEO Dick Costolo said that the service is now processing more than 500 million tweets a day.