As the owner of a small tours company, I have to share my experience here. Around April 2014 we had about 40 reviews removed from our Trip Advisor listing. When contacting Trip Advisor, I was told that their policy regarding reviews has changed and that, from then on, no one could leave reviews on multi- day tours but only on one day tours. When I pointed out that the other tour agencies listed in the same city kept getting reviews about multi- day tours, I was told that ‘it was only a matter of time’. 6 months later the reviews of the other agencies were still there. I couldn’t understand what was going on, until one day I read that Trip Advisor had acquired Viator. This situation lasted for almost a year until recently when Trip Advisor started accepting reviews of multi day tours again. Can someone explain ?