I realize that I wasn't clear enough.
I'm not saying we don't add books, movies, websites, etc., but rather develop a more strict policy about deletion of spammy books, movie, websites.
For example, I think that if an author comes to PW, and adds a shilly product report about their book that is ranked 100,000+ on Amazon, I think it should be deleted. If a community member adds a report on their favourite book, it's a definite keep.