To allow some jazz (especially the classics) to possibly get a bit more exposure around the site. They use a simple “out of 5” star rating. The only thing i’m unsure of are the reviewers of this site. They don’t exactly clearly state if they’re users or staff, but I’m guessing if they’re posted to the front page regardless of who rated it, the site’s owners probably merit the reviews as legit.
Otherwise, should be a decent addition seeing as the site accepts a couple publications dedicated to reviewing only hip hop.