I was not referring to any specific post. I also agree that if a certain book contains questionable content, it may well be mandatory to spread the word.
What sort of content is considered “questionable”, however, is debatable, and, in fact, variable. It therefore would be necessary to obtain a ??? ???? for each case.
I do not think this is a correct application of “common knowledge.” The quality of Frum literature is a matter of opinion, and, as we see from the posts in this thread, there are many divergent opinions on the matter. What you consider for many reasons to be poor literature may well be a great read for me, if only because I am not as discerning a reader as you are.
I doubt that “common knowledge” would render it permissible to announce publicly, “Beryl’s Pizza is terrible,” even if many people agree.
“Common knowledge” also is not a blanket ????, as I’m sure you are aware. As far as I can tell, the ??? ???? rules that if the intention is to spread the word, it is ???? to say, and in all cases it is ???? to believe.
Without commenting on how ???? would view the status of this forum with regard to intent to spread the word (about which I am unsure), I would simply point out that he further rules that even if the intention was not to spread the word, it is only ???? when the subject comes up ??? ???, but not when the ???? ??? was the express subject of the conversation.
I would further caution that in such a conversation, it is too easy to denigrate an entire group of people with a single, broad stroke.
Additionally, in most cases, this puts the speaker in danger of being ???? ??? ????? against all Frum authors.