I had a point in my head about being a good person online, but I could never really pin all the ideas down. However, I was able to pin down one really good point, specifically concerning people that trash talk, and not in the friendly, taunting, “come get me” manner.
How I see it, don’t ever disrespect people that play fairly. They are taking their time out of their life to act as unique opponents. Multiplayer games very rarely supply extreme joy to both teams (usually when teams are evenly matched). Usually someone is going to experience joy at someone else expense. You should be thanking them for letting you have a good experience.