Proceedings of the 5th ACM SIGSPATIAL International Workshop on Location-Based Social Networks, LBSN 2012, Redondo Beach, California, USA, November 6, 2012

These proceedings contain the papers selected for presentation at the Fifth International Workshop on Location-Based Social Networks (LBSN 2012). The workshop is hosted by ACM SIGSPATIAL and held in conjunction with the 20th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL GIS 2012).