Based on my personal unscientific anecdotal experience, my bad reviews on Tripadvisor tend to get censored very often. Much less so on say Yelp.
Besides my own limited analysis, are there any "scientific" analyses of the matter onTripadvisor, Airbnb, Yelp, Expedia,` etc. ?
In the case of TripAdvisor, I did a little experiment where I made multiple new accounts and wrote reviews--some 1 star and scathing, others 5 stars and fawning. The bad reviews were usually never posted (or posted, then later deleted), while the good ones were always posted (and there is no way I can do anything to delete them afterwards). I invite anyone reading this to run a larger scale and more scientific version of my limited experiment.