"Real" personality vs. "Online" personality

So I ran across this site and the premise is that you put in a website (I did this one) and it gives you the "personality type" of the author. This is based on the Jung Typology Test which I have taken several times in the past. I found it very interesting that this was the result:

ESTP - The Doers

The active and play-ful type. They are especially attuned to people and things around them and often full of energy, talking, joking and engaging in physical out-door activities.

The Doers are happiest with action-filled work which craves their full attention and focus. They might be very impulsive and more keen on starting something new than following it through. They might have a problem with sitting still or remaining inactive for any period of time.

What is interesting about this is that it is totally NOT my personality type. Of course, this is an objective way to simply base an analysis on the content of blog posts, so I don't guess its terribly accurate, but still! So this leads me to the quandary of whether or not I am my "authentic self" (thanks Oprah!) IRL or online..... Maybe I have split personalities! I think I may have an identity crisis....

Oh, you can take the test here