G'day. Good job standing up and putting the whole topic out there!
I've only been here for a couple of Months but I have had it happen to me a few times.
I replied along the lines of" Thanks, what was the part of my post you liked the best?"
Never heard back!
How does the whole "flag" thing work?
Similar to what used to be a downvote. Best reserved for where content is either HIGHLY inappropriate, fraudulent/plagerism, or spam. Knocks down the visibility of the flagged post/comment and the offender's reputation score.