This then is a characteristic you ostensibly share with your introverts.
A desire for reinforcement stems from a need to prevent insecurity/unpredictability.
To be honest, murkrow, the impression that I get of you is that your desire for positive feedback concerning your actions suggests uncertainty over their direction. This uncertainty needles a lack of confidence you probably protect from others, view as a sign of weakness, and work to overcompensate for its presence with an inflated sense of bravado via boisterous (singular) attention-seeking behavior. (If your RL persona is indicative of your online creation).
You're afraid of being ignored/have your ideas dismissed, then? Why?