The question is not if but when.  But you shouldn't worry; there isn't a company or person on the planet that doesn't have detractors.

If your marketplace offers truly deliver value, you will have more satisfied customers than dis-satisfied ones.  If you don't, you have bigger problems.  You will go out of business regardless of any negative reviews left on Morevidareviews.com.

Instead look for the value in your negative reviews:

1- They bring any negative conversations to the surface where you can see them and take appropriate action.  The fact that people didn't use a forum like this one to express negative opinions about your offers doesn't mean that they didn't exist, or that they weren’t being expressed in other forums e.g. in blogs, articles, Facebook, Twitter etc.

2-They bring balance to your reviews.  People have learned that all that glitters is not gold and they've been taken advantage of so many times that they no longer trust the testimonials on your site.  Having reviews that also reflect what didn't work or was less than ideal helps people trust that they are getting the real picture of what you have to offer.

3- They help people select what is right for them. Not everything is right for everyone.  One person’s meat is another person’s poison. The comments in the reviews help readers of those reviews understand why people didn't like certain things, and decide whether or not they share the same idea of what's important from what's not.

4- They expose the "crazies."  Most people will leave fairly balanced reviews, and we do our best to instruct our members how to leave and read reviews.  The people who tend to be emotional and overly zealous about why your offer will bring plague and pestilence on the world expose themselves as emotional, unstable and having an axe to grind.

5- They give you an opportunity to learn and improve. Apart from the "crazies" you can learn from most negative comments and reviews.  Professionals will take whatever is actionable and improve their offers.