Thanks for the tip!
I've come across some of this material, but haven't read it in a systematic way. I very occasionally refer to persuasion as 'the dark arts' - I think that phrase/connection came from LW originally.
Earlier this year I gave a talk on the psychology of persuasion, synthesizing some of the fascinating studies that have been done. Rather than present the most blatant techniques as manipulation, I framed them as known weaknesses in our minds that could be exploited if we weren't wary and aware. Thus: defense against dark arts. Combining rationality and Harry Potter! Hey, that would be a great fanfiction! (Yes, I'm aware of Harry Potter and the Methods of Rationality and have done my best to spread it far and wide.)
Thanks for the support regarding my job: I've loved doing it and hope to do more for the secular movement!
Are you volunteering for the post of LessWrong's DADA professor? The space is open if you want it, though Yvain has previously submitted an application. It should also be noted that a certain someone doesn't seem interested in the job (probably a good thing, on balance).