AQ Test
The 50-question Autism Spectrum Quotient test on OkCupid (from a link on Wikipedia). Out of a possible score of 50, I scored a 43. Given that ``Eighty percent of those diagnosed with autism or a related disorder scored 32 or higher'', and my score was 97th percentile, it prompted me to start looking for a clinician who specialized in AS.
The link address is: http://www.okcupid.com/tests/take?testid=1982215450153908026