Users and emergency responders working in the area are invited to contact the team in order to join the group and share their related apps, services, data and resources. See the ArcGIS Online (BETA) ESRI Gulf Oil Spill Response

Opendata, Public domain GIS data and Free GIS data repositories and clearinghouses. Are you still paying commercial data resources for Free, public domain GIS data? If so STOP IT and WAKE UP!
ArcGIS Online ESRI Gulf Oil Spill Response