Yelp talks about not changing reviews or deleting bad reviews.<p>What obviously DOES happen is that they sort reviews differently and make the bad ones hard to find.<p>Then they come out and say &#x27;we don&#x27;t delete reviews, we don&#x27;t manipulate them&#x27; but it&#x27;s easy to find companies that have reviews sorted so that the negative ones are buried and on a completely separate page from the main reviews.