@Wavefreak, I was the same way when I was diagnosed. Here's what I found:
1. They are for pre-natal autism testing. While this doesn't sound horrible on the outside, it has been shown that it will greatly raise the rates of aborting autistics.
2. No autistics are on their board, only parents. Can they really claim to speak for autism when the people on their highest level have no clue what autism really is?
3. The CEO of AS, Bob Wright, has an exorbitant salary of at least six figures. It's somewhere on their website, not sure where, if you want to look it up. People who run charities should not be living high on the hog out of the charitable funds.
4. Their general disdain for autistics, shown in such ads as I Am Autism.
If you need more info, I'm sure one of our other members who has done much more research on the subject would be glad to help you.