Well in that case, you are wrong.
You weight extroversion with the amount of time that is being spent on this forum. That is my same mistake when I came here on this forum. Look at my first topics, you will know.
Extroversion is about being focused on outer world. Not jumping to conversation with people for small talk or stupid useless conversations. I guess by being extrovert you imagine someone who talks too much, swears too much and hangs out with others too much just for the sake of it. This is wrong. This has nothing to do with extroversion.
Extroverts are those who are focused on outside. For example, me being too much dependant on others is a sign of extroversion actually. Because those who are introverts, they dont depend on others too much, nor do they intend to make anything that requires many people to work alongside with them. Introverts are focused on things that they personally can accomplish. Extroverts focus on things that they can acocmplish in groups.
I think by now the rest probably will make sense to you.