Four more!

What is best mustard?
https://web.archive.org/web/20230902101713/https://endchan.gg/kc/res/39064.html
https://archive.ph/tDwHE

Spanish flu and WWI
https://web.archive.org/web/20230902102840/https://endchan.gg/kc/res/39197.html
https://archive.ph/RqJdM

Etymology thread
https://web.archive.org/web/20230902103641/https://endchan.gg/kc/res/39053.html
https://archive.ph/GWAaE

Movies n TV shows
https://web.archive.org/web/20230902103952/https://endchan.gg/kc/res/16423.html
https://archive.ph/Tig2f