I've never been diagnosed with Aspergers, or felt that I had it.
Hope is the denial of reality. It is the carrot dangled before the draft horse to keep him plodding along in a vain attempt to reach it. We should remove the carrot and walk forward with our eyes open. -- Raistlin Majere
I was tested by a neuropsychology specialist about three years ago and diagnosed with asperger's disorder. This score would likely be higher if I did not take into account how I am now with the things I've learned and conscious adjustments to behavior and understanding over the years.
I couldn't help but notice that being extroverted/enjoying social interactions will lower your score significantly. I wonder how many people combine extroversion with an autism-spectrum disorder. The quiz seems to rely on the thinking that if something is difficult or causes problems (like social interaction for autistic people) then they wouldn't say they liked doing them. It's a reasonable assumption, but I wonder if there aren't autistic people who are mostly unaware of their difficulties with social situations and have mostly been around pleasant/accommodating people who didn't give them negative feedback during their interactions.