Ask HN: My new startup idea: Let hackers build for you

So, my idea is to create a website where entrepreneurs or product owners will post their challenges along with constraints (product/services/requirements) and hackers will devise solutions which work within these constraints and community will vote and decide which one is best. Hackers will earn reputation and experience.

There are plenty of consultants offering special help. But many times you are not able to afford them or you don't know whether consultant really has the experience they claim under their belt. Well, with my startup idea they can easily verify by looking at hacker's history.

So, I need some feedback. What do you think about this idea? Do you've any suggestion for me?