Geolocational Social Networking By facebooker_1353120898 Mar 28, 2005 Dodgeball Acquired by Google Aug 20, 2007 Gowalla Launched Feb 5, 2009 Google Latitude Mar 11, 2009 Foursquare Launches Aug 21, 2009 Twitter Adds Geolocational Tagging Aug 18, 2010 Facebook "Places"
