All I can offer in the line of possible explanations Bruce, is that I have noticed when I go in to the actual Q&A lists, there's an unusually high influx of people who have just signed up (as in "minutes ago") no profile pic or info whatsoever. They instantly go to the Q&A and ask bizarre, off the wall questions with no sense to them....Just your typical lonely, bored & ignorant creature who has nothing better to do than cause disturbances & try to annoy others.
I assume they go onto our sites to leave similar nonsensical comments. Just report them, Bruce. They disappear in due time.....like a simple head ache. They persevere & go on to another site!! LOL
I always just chalk this sort of thing up to the fact that someone left the door to the flight deck, wide open again!!