Blogging also introduced opportunities for a new wave of amateur film critics to have their opinions heard. These review blogs may focus on one genre, director or actor, or encompass a much wider variety of films. Friends, friends of friends, or strangers are able to visit these blogsites, and can often leave their own comments about the movie and/or the author's review. Although much less frequented than their professional counterparts, these sites can gather a following of like-minded people who look to specific bloggers for reviews, as they have found that the critic consistently exhibits an outlook very similar to their own. YouTube has also served as a platform for amateur film critics.