Twitter celebrates seven years with a video highlighting its most memorable moments. Plus, here's how you can find out when you joined the social network and rediscover your first tweet. Seven years ago today, Twitter founder Jack Dorsey posted the site’s inaugural tweet: “just setting up my twttr.” Today, the microblogging site has more than 200 million active users who post more than 400 million tweets each day. “The steep trajectory of Twitter’s momentum is something @jack, @ev and @biz only dreamed about back in 2006,” writes Karen Wickre, editorial director, in a blog post. SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe Dorsey’s first tweet was just 24 characters long. If you’re curious about your first post, you can download your Twitter archive. Go to your account settings by clicking on the gear icon at the top right of the page and selecting Settings from the drop-down menu. Then, click “Request your archive.” When your download is ready, Twitter will email you with a download link. Another option: Visit MyFirstTweet.com. Type in your username and the website will uncover your first tweet, along with the date it was posted. This site does not appear to work for everyone, however. You can also find out the date you joined Twitter. To see how long after the social network’s inception you signed up, visit WhenDidYouJoinTwitter.com/. To commemorate seven years of the twittersphere, the social network created a video highlighting some of its biggest moments: the first tweet from space, protests in Tahrir Square, the earthquake and tsunami in Japan, and the London Olympics, to name a few. Related content opinion Yahoo CEO Uses GIF, Tumblr to Announce Acquisition Marissa Mayer bets a billion dollars on the blogging site, vowing Yahoo won't 'screw it up.' By Kristin Burnham May 20, 2013 2 mins Consumer Electronics opinion Funny Facebook Video Spoof Personifies User Frustration What if Facebook was a person who rearranged the contents of your home while you were away? That's the premise of a new video spoofing the social network and the changes it makes, often to your dismay. By Kristin Burnham May 13, 2013 1 min Facebook Social Networking Apps opinion 6 Spectacular Google Glass Video Spoofs Want to know what John Stewart, Steven Colbert and Conan O'Brien think of Google's augmented-reality glasses? Take a look at these six hilarious Google Glass spoofs and parodies. By Kristin Burnham May 10, 2013 1 min Internet opinion YouTube Maps Most-Watched Videos Across the U.S. Which videos are on the verge of viral? YouTube's newest tool displays the top trending videos in the U.S. by age, gender, views and shares. By Kristin Burnham May 07, 2013 2 mins Consumer Electronics Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe