Twitter Celebrates 7th Anniversary

just setting up my twttr.” That’s how it all began on March 21, 2006 when Twitter co-founder Jack Dorsey sent out the very first tweet. Seven years later @ replies and hastags are the norm. Admittedly, I’m not the most rabid user of the microblogging service, but it’s hard to imagine life without hashtags. Don’t you agree? Side note: When did this (#) change from number sign to pound key to the ever so trendy hashtag?

With over 200 million active users, and more than 400 million Tweets sent out every day, Twitter, like it or not, is here to stay. As for the most re-tweeted Tweet in history, that honor goes to President Obama. On election night, his “Four more years.” had more than over 800,000 re-tweets.

To celebrate the company’s anniversary, key moments in their history are highlighted in a cute video. From natural disasters (Japan earthquake) to global events (London 2012 Olympics) and even Oprah Winfrey’s first Tweet are included. With regards to the latter, the OWN network founder gets a caps etiquette lesson from none other than Shaquille O’Neal. Check out the clip below.

Can you believe the first hashtag was sent out in 2007? Do you use Twitter? What do you primarily tweet about? Sound off below.