What does the last part of the URL http://www.aarongreenspan.com/writing/essay.html?id=70?rel=repost-with-hn-relevant-headline mean? Anyway, his writing

What does the last part of the URL http://www.aarongreenspan.com/writing/essay.html?id=70?rel=repost-with-hn-relevant-headline mean? Anyway, his writing has an...interesting tone. He calls Ben Mezrich "a terrible writer (who also can't spell)," he has put a lot of effort into his About page (which reads like a autobiographical FAQ), and he tries to advertise his book on the front page of his startup. [0] I respect the battle he's going through with the state of California over FaceCash, but there's zero reason to be so mean-spirited. [0] https://www.facecash.com/index.html?source=thinklink.com https://www.facecash.com/index.html?source=thinklink.com