>>372668465
That's not Y that made that post. I dunno who it is.
I asked people some questions like that but didn't keep numbers. In the NA speed friending instance I was in, I did ask everyone I was matched with and most people told me they were from 4chan. Several said that they were from other boards or that they checked out our thread and that it made them hesitant. 
I was matched with maybe around 5 true randos and they all told me that they joined off friends. Furthermore, when I asked him who their friends were, most of them would give me names that I didn't even recognize, suggesting that they were randos who were joining off randos.