Not sure whether you comment above is directed at Youtube only, but Amazon does have "Was this review helpful to you?". I believe voting on Yes makes it more pr

Not sure whether you comment above is directed at Youtube only, but Amazon does have "Was this review helpful to you?". I believe voting on Yes makes it more prominent. As usual, this kind of system is subject to fan-boy treatment. I once left a 1 star review of a game which I genuinely disliked and gave my reasons (involved tinkering around graphics settings in XML files); there were a lot of clicks on the "No" button to the above question, presumably because the fan-boys could not tolerate someone criticizing their favourite game.