I'm thinking of starting a business that would list good contractors. Not just based on consumer comments but actually checking to verify their information is correct. There is a service similar to this that I know of but it doesn't verify the contractors information it only lists consumer comments.
#1. "RE: Think this will work?" In response to Reply # 0
Is the similar service Angie's list? If so, they DO verify the contractors information/ address/ name etc. and send the contractor the customer's report before posting.( I am a new member and it took probably 2 months for verification and posting). Anyhow, I still think it is a good idea. Anything other than picking out a contractor from yellow pages will serve consumers well. Maybe you could make your's more localized?
#2. "RE: Think this will work?" In response to Reply # 1
When I lived in Indiana there was a couple who ran a similar business and they are very successful. They check references and background as well on these people and when the worker gets a job they pay a referral fee to the owners of these business.