I get it, it's for free and they need ads to survive. But the way it's done, a slow wait and pops up on every screen refresh makes for rough navigating.
Some reviewers are professional, like its resident lead critic Stephen Thomas Erlewine. Some writes like fanboys. Some goes on and on and on. And in some cases the stars awarded do not fit what's written, like a 2-star album gets a rave review. Release information is rubbish, usually uses rerelease as master, Discogs is a way better site for that. Having said all that, still a good source for a quick (and rough) guideline to music.