depends on what you're looking for!
its mainly for fan fiction. some original works also get posted though.
on ao3 you can filter really well. like, I personally don't like shippy or smut content, so I just set my search to Gen works only (Gen meaning no focus on romance)
I found really well written works for most of the shows I enjoy.
esp bigger fandoms.
(also, if you want to reply to several ppl in one go,
try using @[name] to just make one post!
keeps the forum a bit cleaner)