Evan Williams (Internet entrepreneur) as co-founder, board member, and investor. In October 2008, Williams became CEO of Twitter, displacing Jack Dorsey, who became chairman of the board. By February 2009, Compete.com ranked Twitter the third most-used social network, based on their count of 6 million unique monthly visitors and 55 million monthly visits. As of February 2013, Twitter had 200 million registered users. It gets 300,000 new users a day and, as of August 2015, was ranked twelfth in the world. It receives more than 300 million unique visitors and more than five billion people in traffic a month. 75% of its traffic comes
Sidney Dorsey to Brown's murder, but was unsuccessful. During his tenure as sheriff, Dorsey also served on the task force that looked into reopening the case of convicted child murderer Wayne Williams. Dorsey appeared as one of many, including some of the victims' relatives, who voiced public doubt of Williams's guilt of the murders. Dorsey is quoted as stating: ""Most people who are aware of the child murders believe as I do that Wayne Williams did not commit these crimes"". Williams was identified as the key suspect in the Atlanta Child Murders that occurred between 1979 and 1981. In January 1982, he