*[https://www.pbs.org/mediashift/2007/05/twitter-founders-thrive-on-micro-blogging-constraints137.html Twitter Founders Thrive on Micro-Blogging Constraints.] | *[https://www.pbs.org/mediashift/2007/05/twitter-founders-thrive-on-micro-blogging-constraints137.html Twitter Founders Thrive on Micro-Blogging Constraints.] |