There is often mentioned "LW" in the comments, but it seems to be an abbreviation for Letter Writer (the person who wrote the letter about the "rationalist"), not LessWrong. It took me some time to realize this.
Well, I expected that making "rationality" popular would bring some problems. If we succeed to make the word "rationality" high-status, suddenly all kinds of people will start to self-identify as "rationalists", without complying with our definition. (And the next step will be them trying to prove they are the real "rationalists", and all the others are fakes.) But I didn't expect this kind of thing, and this soon.
On the other hand, there doesn't have to be any connection with us. (EDIT: I was wrong here.) I mean... LessWrong does not have a copyright on "rationality".
there doesn't have to be any connection with us
Comments mention HPMoR, and letter writer says he read it aloud to her. The Modafinil use is also circumstantial evidence.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.