Very good move. Mods. I know you've done this a number of times before (reminding QLers of the rules and warnings to behave, etc) and have been tolerant but the fact that the site lacked the intelligent and helpful debates it used to have is result enough that there needs to be renewed change.

qatarisun said "there is difference between bashing and stating the facts. where is the line, border between these two? "

It's HOW things are said and of course, respect for others' opinions and not taking things personally.