When you PM someone, the message is in your Outbox until the other person reads it...I think. Once they've read it...it moves to your Sentbox.
(At least that's my understanding, FWIW.)
I have heard of only one mistake that doesn’t have an explanation for a careful reader...with an open mind. (And, no, I’m not going to tell you what it is!) —KJA
I don't like every writer's style; for instance, I have never been able to get through Ursula LeGuin, China Mieville, or Iain Banks, all of whom are critical darlings. —KJA
I...had written a bunch of Star Wars and X-Files books...that proved not just that I'm a hack, but that I could write in somebody else's universe... —KJA