Published: March 23, 2012On March 21, 2006, Twitter co-founder Jack Dorsey sent the first tweet in history. The words chosen for that occasion, "just setting up my twttr."
As can be observed in that message, the original purpose of Twitter was to share with our acquaintances what we were doing. Lately users started publishing all kinds of texts, always inside the 140 characters restriction, and nowadays Twitter is Internet's standard for sending short messages and the favorite social network of celebrities all over the world.
Last February Twitter reached a quantity of 500 million users.
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