I dont think thats a great source to be honest...
First, people can submit a review which is false as it can be anonymous, just to damage the reputation of a company, you only see bad points of a company, there will always be some companies that have customers that wont like them and post bad things.
Its not like a forum where the host can reply or another customer with the host that has good experiences.
I wouldnt really like to use that to find or judge a host