Dug through every sticky forum tips post and help file I can locate...
Hovered over every visible button and read every tooltip that pops up...
And I can't for the life of me find the Private Messaging system. Maybe I've looked right at it, I dunno. I'm sure I'll facepalm at myself once someone points me in the right direction.
But at the moment, for all I can tell I'm the victim of some sort of hazing.
So if someone would be so kind as to send me along the way to facepalming and going "Duuuuh, there it is!" I'd be quite delighted.