Twitter Launched
Twitter sent its first tweet and opened to the public
March 21, 2006
A Simple Idea With a Character Limit
Twitter was created in March 2006 by Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams while working at a podcasting company called Odeo. Jack Dorsey sent the very first tweet on March 21, 2006, writing simply: "just setting up my twttr." The service launched publicly in July 2006. The defining constraint was a 140-character limit per message, inspired by the 160-character limit of SMS text messages. This forced users to be concise and created a communication style unlike any other platform. The company's name, originally "twttr," was a nod to the brevity and the chirping sound of birds communicating in short bursts.
Growing Into a Global Conversation
Twitter's growth accelerated during the 2007 South by Southwest conference in Austin, Texas, where it was prominently featured and daily tweet volume tripled. The hashtag, now used across virtually every social platform, was proposed by user Chris Messina in 2007 as a way to group conversations. The retweet feature, which allows users to share others' posts, emerged organically from user behavior before being officially built into the platform in 2009. By 2012, Twitter had 100 million active users posting 340 million tweets per day. The platform became an essential tool for journalists, politicians, activists, and celebrities to communicate directly with the public.
Controversy, Change, and Continued Influence
Twitter played a significant role in major world events, from the Arab Spring uprisings beginning in 2010 to U.S. presidential politics. In 2022, Elon Musk acquired Twitter for approximately $44 billion and rebranded the platform as X, changing its iconic blue bird logo. The character limit had already been extended to 280 characters in 2017. The acquisition brought sweeping changes to the platform's policies, workforce, and verification system, sparking significant debate. Despite the turbulence, X remains one of the most influential social media platforms for real-time news and public discourse, used by world leaders, journalists, and millions of ordinary people every day.