I don't think their rating site is helpful. I wanted to publish a warning about castlerock reo, which by the way castlerock raves about their Illow reviews, but they would not let me because castlerock was the seller and not my agent. This is concerning because castlerock is not anyone's agent, they are a foreclosure seller that process a risk filled contract to the buyer and works without buyer representation. Very risky and should be called out. Is zillow biased? Can they be trusted? How many negative castlerock reviews have they rejected? We can't be sure.