This guest post was written by San Francisco Mayor Gavin Newsom, who was elected to the position in 2003 and reelected in 2007. Newsom is also running for governor of California in the upcoming 2010 election. In this guest post, Mayor Newsom details the launch of DataSF.org, a new website that will offer convenient access to city data that is relevant to the community. San Francisco has a long history of innovation.