Sucuri seems to blacklist popular website knowyourmeme.com as potentially harmful and “likely compromised”. Only thing that I got is that the site seemingly has outdated web server. I couldn’t find any negative user comments about the site, even from recent days.
Sucuri: Site found to be used on spam campaigns (either forum, comment or SEO spam).
Also outdated server software:
https://sitecheck.sucuri.net/results/knowyourmeme.com