DigitalGlobe is an American company that calls itself a leader in 'geospatial information'. In 2013, it acquired "Tomnod", a website that uses crowdsourcing to solve various 'challenges'.
In March 2014, Tomnod became involved as one of the biggest amateur groups to unofficially undertake what mission?
[+ Show Answer]
To locate the Malaysian plane MH370 that went missing over the
Gulf of Thailand. Volunteers are given satellite images to look at, and to annotate for various kinds of information, including possible plane debris. Here's
the challenge page and
more about this amateur search.