I have read this thread without finding any substance and only one culprit identified (Nick, who gave himself up; but his chord post was one I had copied).

In an early post, glueman commented on folk dementors.
Please, sir, what is a 'dementor?
My dictionaries have failed in my quest for a meaning.
Is it one who makes people demented? Or is it someone who brain-washes folk (de-mentor = removal of knowledge)?

I cannot rest until I know the answer!