Backstory: There's no objective way to see reviews for freelancers. We've been using a few freelancers for some side projects and most come from relationships but we do take a gamble on some.

The Idea: A 3rd party review system for freelancers.

Deep Dive:  Similar to trust pilot for businesses, you would provide an embeddable widget for freelancers to host their score on their personal website or blog. Additionally they could put it on upwork or any other freelance site.

By providing a 3rd party system, you would be more objective than freelance sites with their own reviews.

Validation: Trust pilot and clutch already exist for businesses.

Monetization: You would charge the freelancers a small monthly fee.