To a large extent, almost anything you think can't be automated by computers can be crowdsourced. Do you think an HR job can't be taken over by a robot? Try asking 10,000 people for hire/fire decisions on your potential and existing workforce and compare that to your HR department's decisions. I bet they'd be close. The only question is whether crowdsourcing is cheaper, faster or more reliable than hiring one good person.
Mokalus of Borg
PS - The problem gets very meta when talking about hiring HR people.
PPS - I'd love to see how well a crowd can act as CEO.