If I spend enough time on the internet, especially if it's in the comments of a news article or perhaps on a forum; chances are I am going to read something that pisses me off. There is then this urge of wanting to tell this person off or correct them; but what I always come back to in my mind is how often do people change their point of view after arguing with somebody in person, never mind the internet? The percentage is basically so close to 0 it can be considered an anomaly.
When I remind myself of this, I sheath my keyboard sword and go back to what I was doing. Sometimes though, I can't help but give in but I have yet to come across somebody going "No, you're right. I was being a fool".