Oh I wanted to make a thread like this too, just for random links to interesting and little known websites. Thank you anon <3
On top of my head:
http://www.asofterworld.com/index.php?id=1- my fave dead webcomic, though 'comic' might not be the best way to describe it. It's like poetry smashed together with photos. Often sad and edgy, but always memorable.
apologies if it's well-known among amerifags or something; personally I have not stumbled upon any people that know ithttps://www.sputnikmusic.com/ - my go to for music reviews. I find them much better written than music reviews in my native language, which often sound like something written by a middle school kid for an English assignment, not to mention they don't cover anything but the most famous bands and pop stars.
I recently became aware of
https://rateyourmusic.com/ but have not yet read this website much…
http://oneweekoneband.tumblr.com/bands - a really enjoyable tumblr project where random bloggers post essays about what does their favorite music mean to them. The week quality varies, but overall I really like it.
https://www.tuxedounmasked.com/ - various trivia and thinkpieces on Sailor Moon. I discovered it today and really enjoy it browsing.
https://www.animefeminist.com - some other anon mentioned it already on lolcow, so maybe the site is well-known. YMMV but it's nice to have a site centering on female perspective on anime. Keep in mind that if you have a radfem outlook on trans people or just don't agree with SJW you might find end up being annoyed if you run into a review/post centering about those issues. I still think it's worth keeping the site in mind as it can be pretty helpful and interesting.