Facebook loves changing things. They changed the Messages so I can no longer delete the 20-30 daily spam messages I get from people I don’t know. Now when I click the X it “archives” the message. Gal pal Rhonda Guido gave me the fix: The way mine is set up, I have to click on the person’s name, Actions, Delete Messages, then Delete All.
Done! I get by with a little help from my friends.