I watch a lot of films and TV series, especially more recently on Netflix and Prime. I once only went to Rotten Tomatoes to help me decide what to watch, but noticed that most of the new series from Korea and some other countries were not yet rated.  So I'm now expanding into Metacritic and IMDb.   How do they compare? Rotten Tomatoes began in 1998, and is now owned by Comcast's Fandango. It ranks #225 in the USA as a most-watched website.  Anything rated that has 60%+ ratings is considered Fresh, with 70%+ gaining a Certified Fresh.  If not, then Rotten.  Each feature is rated using two averages, from critic's reviews and the audience, us.  Their ratings have killed some blockbusters at the box office, like  Baywatch  and  The Mummy .  The first got a 19% score and the second a 16%.  However, both  Wonder Woman  and  Spider-Man (Homecoming ) got 92% and their earnings exceeded expectations. Wikipedia  lists all the  100% rated films by reviewers .  There are supposedly  84