dotdew: Who Is Belle de Jour?
Damn, someone else did a whois lookup of iambelledejour.com
I'd go with the 'probably an A' theory.
I want to believe. But I did have my doubts after the description of self-fisting. S/he must have long arms, or do yoga, or something, because it takes a degree of contortion I don't think I could accomplish, RSI aside.
I can't imagine it being a fun thing, as much as something that would give you a rather odd sense of personal achievement.