"Metacritic is a website that aggregates reviews of media products: music albums, games, movies, TV shows, DVDs, and formerly, books. For each product, the scores from each review are averaged. [...] Metacritic's scoring converts each review into a percentage, either mathematically from the mark given, or which the site decides subjectively from a qualitative review. Before being averaged, the scores are weighted according to the critic's fame, stature, and volume of reviews." (source: https://en.wikipedia.org/wiki/Metacritic)
