The point regarding introverts is very important. I am probably the most shy person you could ever meet, I can't look people in the eye when talking or hold conversation, but I don't see myself as an introvert. Introverts are people who don't want or need others, think of the most famous and well liked person ever and they could easily be an introvert, how you carry yourself or act around others is unrelated to introversion, it seems like a weird misconception, the idea that shy == introvert, social == extrovert, when there's no real correlation.
Just wanted to give you a strong seconding. I'm most certainly an introvert, I could easily spend (and enjoy) months alone with my work and hobbies, yet I'm not shy at all and go out of my way to speak at events and meet people to benefit my work. It takes all types..
