I computed a list of more than 500 PDFs on Hacker News in 2018 which you might also like:<p><a href="https://getpolarized.io/2019/01/08/top-pdfs-of-2018-hackernews.html" rel="nofollow">https://getpolarized.io/2019/01/08/top-pdfs-of-2018-hackerne...</a>