The first speaker at Saturday's Geekyoto was Christian Nold who was mainly talking about emotional mapping. He mentioned some work he's done with communities and groups to map emotional responses to areas. This photo is part of the San Francisco emotion map. Participants are given handheld machines which monitor sweat levels (similar mechanism to lie detectors) to determine the emotional state of the person who additionally annotates their thoughts.

An interesting first talk, and some beautiful maps amongst his slides: