There is generally a key difference between people with SA and people with Asperger's. People with SA tend to desire social contact but, obviously, feel really anxious about it. Social phobics want to treat their problem because they don't really like the isolation they're enduring.
Aspies, on the other hand, tend to prefer the isolation. Half the time they aren't even really socially anxious... they can be very outgoing and talk your ear off about something that happens to interest them. They just have a hard time realizing when nobody cares.
So I guess the major question is... are you on a board dealing with social anxiety because social interaction is something you genuinely want, or does it only matter to you insofar as it gives you a sense of normalcy?
I was diagnozed with SAD but I suspect aspergers too. BTW I feel both ways at certain times