Prof. Leiter criticizes Juan's criticism of one of Leiter's posts, and proceeds to say:

So who is Juan Non-Volokh? I intend to find out and to post that information here in due course. I welcome your help ... and I promise to keep my sources secret!

I will let you folks be the judges of whether this is good behavior on Prof. Leiter's part. In my view, the nicer thing to do is to respect people's preference for anonymity, at least unless there are some unusual circumstances (more than just disagreement with their views) that are absent here.

UPDATE: Brian Leiter says here that he won't publicly identify Juan, though in this update to his original post he says that "perhaps" he won't do it. If the first of these two is indeed the conclusion to which he has come, then I'm happy to hear it.