Some books piss me off at first glance. Double deviates? Really? Why? As compared to the repressed freaks who fuck in the exact same position every time they have sex? Eww! Give me deviation or give me complete boredom!
The only really interesting aspect is that they group our alphabet soups (LGBTQ/BDSM) together. I'm all about making common cause but hell if I accept this author's definitions.