At the end of the day, who really cares about what someone on the internet, that they have never met and probably would never meet, thinks. It would be nice if everyone thinks the same way, thats just not the way life is. Until what they say can physically harm, abuse or is just unethical we can all express out  disagreement in a reasonable way. Abusing or threatening someone over the internet does not do much, its a waste of time, unnecessary stress since you are not sure it would have any effect, unless you're into that kind of thing and you just like to exchange unpleasant word or it keeps you excited theres no point. Yeah sometimes you really have to tell someone off, once or twice would do it. The point of having arguments/discussions/debates is to exchange ideas, agree, disagrees, make your point and hope the person agrees... if no seems to be agreeing or changing their point of view, drop it.
Seems to be sooo much negativity on this site lately