So on Amazon page we see the distribution in addition to the average score. People clearly either love it or hate it. https://www.amazon.com/Inconvenient-Truth

So on Amazon page we see the distribution in addition to the average score. People clearly either love it or hate it. https://www.amazon.com/Inconvenient-Truth-Al-Gore/dp/B00AB0SHRW https://www.amazon.com/Inconvenient-Truth-Al-Gore/dp/B00AB0S... Plus it skews toward the positive, since we would expect a verified buyer is more likely to be someone that already approves. On the other hand, films that everyone thinks are OK are still indistinguishable from a film I may either love or hate. This is not a flaw, but inherent in the idea of ratings itself. I don't see bimodal distributions as a problem, but hiding them might be.