Most people with personality disorders don't seek out help, I think that's a lot of the reason this part of the boards is so quiet with the exception of the borderline PD forum. The borderlines are more likely to seek out help than a lot of other people with PD's so I think that's why there's so many of them compared to the rest of us that are personality disordered.
I've seen a few other schizotypals post here, but what happens is people show up in these forums like you... see nobody here, and then leave. What would be awesome is if all of you would log on all at once for a change so you guys could stop missing each other.