If you read something and really hated it and someone asked you your opinions of it, what would the appropriate thing to say? I think most creators would hesitate to bash each others' works.

If I dislike a book just for craft or taste, I don’t talk about it. I can’t endorse it in good conscience and I firmly believe just because I don’t like something doesn’t mean others won’t love it.

So I have a strict policy of just not talking about those books. It works well for me. 

People are always trying to get me to bash books I haven’t read, and that seems very wrong, so I don’t do it.