I already knew that, as you might have inferred from "I agree with ciphergoth's guess" and, er, the fact that I named him in my last paragraph. (That was an oversight which I am about to correct.) Perhaps I should have been more explicit about what guess I was agreeing with.

I don't know why the coyness, but perhaps TTWMNBN is suspected of googling for his own name every now and then. Or perhaps ciphergoth was just (semi-)respecting Eliezer's decision not to name him.