The "rule" is if you have a critique to make about someone's post such as speculating they made a freudian slip in their spelling, you ping that person and say it their cyber face.
what?
That rule amounts to courtesy and common sense - - but it only applies for someone who has enough moral courage and character to abide by it. But somebody who would level this particular smear - - equating a misspelling of a hard-to-spell name with racism (the kind of cheap shot that Jesse Jackson might use) -- has already shown a lack of character, so I'm not surprised that he didn't have enough courage to ping the person he was smearing.