It's not fair to classify me as an extrovert because I can be perfectly content by myself for long extended periods of time doing my own thing; but if I just happen to be in a group setting I do care about what other people think (anybody who says they don't care what other people think is lying really).

I am an entirely different person when I'm not posting here, and even just on different internet forums I'll take on an entirely different person - whatever I feel I am most suited for given the conditions. Same with real life.