I imagine many people on this forum would find themselves categorized as introverts, rightly or not. For those who don't know, an introvert, roughly speaking, is someone who tends to get his/her energy from within and expend it from without. This is to be contrasted with an extrovert, which is precisely the reverse: s/he gets his/her energy from without and expends it from within.
Consequently, introverts tend to find themselves spent when they socialize; extroverts tend to thrive on personal interaction. On the other hand, introverts tend to thrive on solitude and extroverts tend to be drained when alone for extended periods of time.
I'm just curious if any forum members find that they fit this category and/or notice people tend to mistake it for shyness or a lack of sociability.