Can you extract more information from the personality test than you put in? I find that this is an issue with the majority of personality tests...
For example, you are asked something like, "When you enter a social situation, do you tend to let others initiate conversation or do you take initiative?", "Do you consider yourself a shy person in unfamiliar contexts?" and you answer "let others initiate" and "yes" and it tells you you're Introverted! That means that you tend to be shy in unfamiliar contexts and will tend to let others initiate conversation rather than starting it yourself! I mean, it'll usually be more complex, and much more paraphrased, but the idea I get is that it simply takes your answers, classifies you into a bunch of categories it has, whether it be colours, numbers, or letters, and then basically regurgitates your answers in a roundabout way as if to tell you something about yourself you didn't know.
I'm usually put off with the idea of this "gather energy from being with people as opposed to being alone". What the hell does that mean? Like I know that it means that some people need to "charge up" on their own and that social situations may exhaust them, where as others somehow "feed off" of others in social situation to gather energy. Is this science? Or really bad analogy? Might I suggest that extroverts are in fact social carnivores and introverts their herbivorous prey? =P