Social learning tools as a way to include students who are at home due to illness into collaborative discussions held in class. Twitter is an established micro-blogging service available to individuals with Internet access world-wide and provides unlimited access to social networks for its users, to send and receive messages. In 2006, it was funded by Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams. One of the common site users is media outlets to broadcast current news updates. For this reason, people use Twitter as a daily source of information to inform themselves on local and world news. Another way that Twitter
Ken Dorsey Dorsey was sent into the game against the Indianapolis Colts after Derek Anderson was injured; he completed two passes, one incomplete, the other an interception. On December 2, Derek Anderson was put on injured reserve ending his season. Dorsey was named the starter for the remainder of the 2008 season. However, Dorsey was injured during the December 21 game that was against the Bengals. Fourth string quarterback Bruce Gradkowski started in place of Dorsey in week 17 against the Pittsburgh Steelers. Dorsey was released by the Browns on February 9, 2009. For a brief time, Dorsey was the quarterbacks coach