Level 4 - Word Salad: The discussion is incoherent or merely plays with ideas, showing no concern for affiliation, influence or truth.

Level 3 - Signaling: The focus is on showing group allegiance and loyalty.

Level 2 - Influence: The goal is to affect your beliefs or actions, or make you do something.

Level 1 - Truth: The focus is on factual accuracy and objective reality.

via Zvi Mowshowitz