I agree that it's a shame some books have to suffer ratings that clearly are invalid. However I can't think of a way to prevent it, and I didn't see any ideas in the thread either (I did skim though). I hope you'll appreciate that if we just start deleting ratings whenever we feel like it, that we've gone down a censorship road that doesn't take us to a good place.
Related Keywords: Start Think Appreciate Ideas Censorship Feel Down