Tweet These Numbers
Twitter marked the five-year anniversary of its first Tweet, sent by co-founder Jack Dorsey March 21, 2006, with a blog post by Carolyn Penner highlighting important Twitter numbers besides 140:
Five years ago this week, a small team of people started working on a prototype of the service that we now know as Twitter. On March 21, 2006, Jack Dorsey (@jack) sent the first Tweet.
Today, on every measure of growth and engagement, Twitter is growing at a record pace.
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