To Twitter, on Your Sixth Birthday

It’s Twitter’s sixth birthday today, counting from when Jack Dorsey sent the first tweet on March 21, 2006. According to Wikipedia, here are some child development markers we can expect from a 6-year-old: “Movements are more precise and deliberate, though some clumsiness persists”; “span of attention increases; can concentrate effort but not always consistently”; “loves telling jokes and riddles; often, the humor is far from subtle.” Sounds about right!