Around 35-40% of people in the world are introverts, rest can be considered as extroverts or somewhere in between. (extroverts are energized through socialization and collaboration, whereas introverts receive energy from alone time or in social settings with much smaller groups). I think that majority (60%+) of people here on Sanet are introverts, with silent power. They are good in their domains or specific tasks but don't drive energy from too much people interactions.