Right now when you reply to a PM, if you want to delete the original you have to reply, then you go back to the PM screen, then you have to open the old PM, THEN you an delete it. Can you make a command like "Reply and Delete Original" that would do that in one step?
“To get ass, you’ve got to bring ass." -- Roy Jones Jr.
"Your input has been noted. I hope you don't take it personally if I disregard it." -- Guru Zim
It marks every thread read up until the timestamp in the last post in the thread. Because of the way it works, triggering the mark read in a different thread would screw up posts in threads that were newer - hence it is only in the newest thread.