> Your kink equivalent is Mother Theresa (2nd percentile)
LOL! I mean, I know I'm vanilla (a rich, complex, and expensive spice, I'll have you to know), but if Mother Theresa represents the 2nd percentile, who's the standard-bearer for 1st?
My serious point is that I strongly suspect that people towards (ahem) my end of the spectrum are likely to be under-represented among the takers of the survey. The people most likely to take a survey about kink are the people most into, well, kink. I don't know how any survey design, no matter how good it is in a vacuum, can square that circle.
(I say that with all possible respect for Aella and her work. I've followed her blog for ages - her essay about growing up within, and trying to shed, a fundamentalist upbringing is one of the best things I've ever read - and sexology research is fascinating. I just don't know how you can draw robust conclusions from survey data, given the social pro- and in-hibibitions most people have inherited.)