I think Steam is probably a decent model of what Goodreads could have looked like. Full of product reviews, with a carefully crafted recommendation engine that focuses in on genres/studios of interest based on a combination of what your friends are reading/reviewing/liking, your past purchases, new release, etc.

Video games have a similar problem to books in that there’s a lot of genre, and genre is also often a hazy line. And, too, some people really like stuff that I think is total crap (and vice versa).

These days I am almost exclusively shown content that I am at least somewhat interested in.