This site uses new tools to solve problems. It essentially acts as a broker between organizations that need problems solved and the large external community that may be able to find a solution.
The rewards can be pretty substantial if someone can become a successful solver. The site not only has problems in specific areas, but there are pavilions sponsored by single entities for directed solutions. The Rockefeller Foundation Accelerating Innovation for Development is one such organization.
So the possibility exists that external investigators could solve internal problems, and make a reasonable living at it. It will be interesting to see if this does become a form of livelihood.