Mashable’s happy birthday shoutout: http://mashable.com/2011/03/21/twitter-5th-birthday-2/
Five Twitter milestones from the last five years: http://www.mediabistro.com/alltwitter/happy-fifth-birthday-twitter-five-milestones-from-the-past-five-years_b4701
Remember when it was “news” that Charlie Sheen hit 1 million followers? That’s so yesterday: http://www.nbcnewyork.com/entertainment/celebrity/Charlie-Sheen-Scores-3-Million-Twitter-Followers-118348209.html
Last, but certainly not least, a lovely interview with the graphic designer who can take credit for the dreaded “Fail Whale.” http://mashable.com/2010/08/02/fail-whale-designer-interview/
By the way, c21 is on Twitter, @c21pr. We hope to see you there!