Amazon lawsuit aims at fake reviews

Amazon has a point here. Sifting out bogus reviews is vital for people's shopping experience. While legal action like this provides a degree of deterrence, it'll more likely end up a cat-and-mouse game. Giving different weights to reviews depending on the reviewers' past review quality might be one more way to go about it.

Hopefully TripAdvisor, Yelp and others will do the same.

creating false, misleading, and inauthentic customer reviews. While small in number, these reviews can significantly undermine the trust that consumers and the vast majority of sellers and manufacturers place in Amazon

as others have noted, Tripadvisor, and really all web stores can be hyped or supplier sponsored hyped.