I read both fiction and non-fiction. In fiction, I read most genres with the exception of romance, fantasy, science fiction or young adult. If you write in those genres, then I am not the reviewer for you.
If I read a book, I am honest in my review as to how that book resonates with me. If it is good I will say so, and if it is crap I will say that, and it doesn’t matter how famous an author may be.