Most people love to talk about movies they've seen, even if it's to just give a thumbs-up or thumbs-down. That makes movie reviews a popular tag.
Movie reviews refers to analysis of or commentary on particular movies. Some sites compile reviews from a variety of sources, others ask readers for reviews and other sites use individual reviews. The tag may have broad usage, encompassing not only movies currently in theaters but also ones that are released on DVD. It will also cover the full spectrum of movies, from dramas to comedies to documentaries.
While one might consider being a movie reviewer one of the greatest jobs around, the quality of movie reviews depends on knowledge of film as a whole or the subject matter of a particular movie.