I keep looking back at old IM posts and they are interesting! This one stands out (and may explain some of JK’s legal prowess or more accurately, lack thereof):
I want to take this moment to say that if it is true that (upon information and belief) IM is JK, I apologize to the several of you who suggested to me privately that IM was JK. I know I scoffed at that. I have messaged a few of you, but at this point I can’t remember who all said that to me (it was a LOT, you eagle eyed old hags, you!). Mea culpa.