How Mentions, Hashtags, and Retweets Came To Be on Twitter

There are 140 million global active users and 400 million tweets are sent a day and keep growing. Twitter just celebrate 6th anniversary which the service was launced publically on July 15, 2006. Before that, on March 21, 2006, Twitter co-founder Jack Dorsey sent out the first tweet from the service, then called twttr. So, how much the Twitter evolve so far? What the story behind key features that Twitter have now? [Read more...]