Unfortunately, most people only tend to comment when they have had a bad experience and therefor most of the time, negative reviews far outweigh the positive reviews.
However, in the short space of time I have been using this website, it is these negative reviews that are more valuable in my opinion. I think it is a good way to see if the companies actually care about the negative feedback and if they're responding to it.
For example, I left a negative review for a company. The company was alerted to this review and contacted me for further information. I obliged and they investigated my complaint and resolved the situation. They made an unhappy customer happy again.
I think this is an ideal tool for customer service teams to show publicly how they're willing to resolve a situation.
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