If you are in a private conversation and someone quotes a thread on the open unit for you to read and comment on in the private message make sure after you read the open Forum link that you back out of that link and respond to the private conversation thread only LOL. One time I replied to the private conversation but it was actually on the active open Forum thread that I made my less than complementary comments.
By the time I realized what I had done my ability to delete the post had expired. I was horrified and reported myself and the mod quickly deleted the post. Their message to me was "you owe me one" and I indeed did