Extroverts are more attuned to social rewards, so they are more likely to flash a smile for effect. A notable exception are introverts - like me - whom I call "socially accessible" introverts. We have been trained well to smile and nod, which can place a burden on our processing efforts.

Though introverts are drained by interaction, we can take immense pleasure in watching the scene around us.

Introvert conversations are like jazz, where each player gets to solo for a nice stretch before the other player comes in and does his solo. And like jazz, once we get going, we can play all night. Extrovert conversations are more like tennis matches, where thoughts are batted back and forth, and players need to be ready to respond. Introverts get winded pretty quickly.

One of the best places for a shy person to meet people is in a coffee shop. If you are a reader, bring a book and read it there - that gives a guy something to ask you about. Same goes for sketching, writing, or any hobby you can take with you.

Introverts often assume what's inside is visible on the outside. We don't have to invent or fake the emotion; we just need to allow it to be seen!

Introverts paradoxically pull away from culture and create culture.

Extroverts are more responsive to high-intensity and "happy" stimuli, which may be why an extrovert gets frustrated at the less "readable" face of the introvert.