They're written by humans. I know someone who did this, she was paid by the word and would write "best 5 [product]" lists several times a month. Obviously, you

They're written by humans. I know someone who did this, she was paid by the word and would write "best 5 [product]" lists several times a month. Obviously, you only have time to basically summarize points made on the listing and in the reviews for the product for it to be worthwhile. This was pre GPT-2, though.