Several years ago I saw one of our bases being attacked. I headed toward the enemy base planning to kill the VH to help my teammates defend the base. Someone comes on the text buffer and types, "Mongoose. Don't touch that base."
"Why?" I ask. This is a logical question, since I am trying to help my teammates.
The reply was, "Don't be stupid. How long have you played this game?"
The answer is that I have played the game long enough to know that you don't talk to your teammates like that. The proper response would have been, "We have a good tank fight going on over here." Proper, respectful communication keeps it fun for all of us.