Well, what do we know?
It's widespread and hit across many topics at the same time. Some questions get a few others seem like a lot more. It copies and re-asks quesitons.
It looks like both the profiles were all created within the past few days. Some questions are in chinese if you click through to follow the profile, and they burn through their points very quickly. But occasionally seem to award themselves the best answer for a re-asked question.
Also, if you look at the relationship to what is typed, many of the letters are adjacent on the keyboard. So you can see a string for example of a,s,d but not as likely to see q,m,p appear. the letters are always pretty close to each other, yet there's never any punctuation or numbers.
Finally teh asnwer lengths are all between five and ten letters or so, Zipf's Law would have a much greater spread, where one in fifty is a hundred letters long, but not happening here.
What does it all mean? No sure, but probably not the work of a single person. maybe its dolphin. y'know intelligent but with flippers.