Eh, I'd be curious to see graphs of fans for other fantasy that went on to be fairly mainstream and where they started out. I suspect with the early adopters forming the core of the snowball for some time, accumulating in a slow but exponential curve. I mean, didn't GRRM do stuff before GOT - and it wasn't really on the radar?
I think though that the curve takes longer the more you try to bring up socially controversial ideas. But SA would be like a dead dragon without those - just rusting, iron bones.
Anyway, I work on my serial numbers filed off derivative text based game...it'll have links to the blog and such, so it's a promo tool. Peeps could always look for fan fiction forums and drop some home made SA stuff there