As an example of an emergency encountered by a GIS professional:
I am part of a small group that is trying to get signatures on an online petition to get licensed aerial images put into the public domain so that they can be used for disaster relief and humanitarian mapping purposes. The Philippines is devastated after Hainan/Yolanda and the responders are desperate to know where to go and badly need maps and imagery to save lives. People are ready to map it if they can get the imagery.
Are there any avenues available at GIS Stack Exchange where this information can be disseminated to its user base of GIS Professionals to enlist community support, while remaining within Stack Exchange guidelines?