What crowdsourcing activity has there been? A blog post that has a pretty good analysis of the idea.
http://oilspill.labucketbrigade.org/ — allows one to track and report incidents — based on the Ushahidi platform.
http://oilreporter.org/ — Android + iPhone apps to report where oil spill is.
http://en.wikipedia.org/wiki/Deepwater_Horizon_oil_spill is not a bad place to start a deep dive.
Trying to get the real scoop, I am inclined to trust ProPublica, which has published a FAQ list:
Had no idea that the official site of the Deepwater Horizon Command is http://www.deepwaterhorizonresponse.com If you have a good idea, you might try calling: TECH/SUGGESTIONS (281) 366-5511