Hopefully things will level out soon. The owners of the site, such as this one are publishers not the content providers or some BS like that. It is still kind of the wild wild west on the internet.
Angie's List I think is a little more safe and accurate. You can respond to reviews, they are not completely anonymous and the staff at Angie's list do verify post by calling the person. If the person is not a subscriber to Angie's list them they do not count toward your rating but are still visible.