Brilliant. Crowd-sourcing the whereabouts of the missing Malaysian flight MH370
You can join tens of thousands of other people and help look for the missing Malaysian flight MH370 via a brilliant site called tomnod.
You get shown a series of photographs at 20m scale and if you see anything that might look like and oilspill, wreckage or a liferaft, you mark it on a map for experts to review. Brilliant.