When I flag new user posts for "Not an answer" or "me too" type stuff, I usually write a comment to the user asking him to post a separate question and don't pollute the universe bla bla.
Now I can see later - the post was deleted by a mod, but will the OP receive my comment if he logs in after a while - since the post is deleted.
Examples (I assume 10Ks can see the deleted posts - I'm not sure if these are the ones I commented on, but I flagged these for deletion)
Mumps Syntactical conflicts or https://stackoverflow.com/questions/3940607/iphone-openflow-orientation-issue/5472990#5472990