Crowdsourcing has been the name of the game in this week's news coverage and emergency response to Hurricane Sandy, from Google's interactive storm tracker and evacuation maps to now post-hurricane relief site directories and FEMA-supported damage assessment maps.

Image description (from top left, clockwise): 1) Google Crisis Map, 2) Watershed Post's Crowdmap, 3) #Instacane, 4) Mapmill's FEMA Damage Assessment