is there a website where users can post comments about a property?

[George Goldstein]

person A sees a property on zillow and goes to see it. he notices foundation problems.

person B sees the same property on zillow and goes to see it. he notices foundation problems.

if there was a website where users could do a "background check" on a property, person B wouldn't have wasted his time and gas going to this property.

is there such a website?