Feedback needed - platform to test your business idea

Hi! I'm looking to build a platform where budding entrepreneurs (such as your fine self) are able to enter a business idea they have and get objective feedback from their customers.

My plan is to ask a few questions (maybe 15) about what it is, why people would need it and who would buy it. I'll then turn those questions into a website, advertise it on Google and track what users do when they look at the site.

I'll then turn this data into a report showing how many people registered their interest how long they started on the page, which sections you lost people on etc.

So I was wondering what you guys thought and if there were any willing Guinea pigs out there?

Cheers!