Code your stories accurately, insert the disclaimer and then its caveat emptor as far as I'm concerned.

I write relatively violent fantasy material that is based on humiliation, pain, and degradation. Its a fantasy. I know it and I know I'd never perpetuate any of that on anyone else except in a planned, consensual situation. I could care less what anyone else chooses to believe about me from what they choose to read. When I choose to worry, I worry that some emotionally challenged individual might use something I've written as a blueprint for his actions. Disclaimers aside, that still sticks in the back of my mind despite the extremely rare chance that could happen.

As to people being "squicked" by your writing, pay it no mind. Some will love it, some will hate it and some will be at every point in between.

Edited for pathetic phrasing and grammar.