It’s VolokhConspirac. I know next to nothing about Twitter, so I might well have not configured this optimally; if so, let me know. Also, I couldn’t set up a twitter feed called VolokhConspiracy, because that was 16 letters long — but perhaps that’s just the user name length limit, and I can somehow set up a longer feed name. Just let me know, please, what suggestions you might have.
UPDATE: Readers suggested a shorter feed name, so we’re also at VolokhC; but I’ve kept VolokhConspirac for the benefit of those who have already subscribed to it.