The first tweet Co-founder Dorsey sent the first tweet, on March 21, 2006 which said "Just setting up my twttr". You will note that the original name for Twitter was Twttr. (Image source: https://www.flickr.com/photos/jackdorsey/182613360/) just setting up my twttr — Jack (@jack) March 21, 2006 The Twitter Logo To date the Twitter logo…