I researched this a lot because I noticed companies I had intimate knowledge of had any sub-4 star review disappear. I detailed the practices in another comment

I researched this a lot because I noticed companies I had intimate knowledge of had any sub-4 star review disappear. I detailed the practices in another comment further down; https://news.ycombinator.com/item?id=24793383 https://news.ycombinator.com/item?id=24793383