Heads up that every unlocked fic available on AO3 prior to March 2025 has been scraped and put into an AI dataset. The OTW filed a DMCA takedown on the original dataset so it's been disabled and can't be downloaded any more, but the dataset has already been uploaded to other sites.
How to lock all works:
Click "Hi, [ACCOUNT NAME]" at top of screen -> My Works -> Edit Works -> Select "All" -> Select "Edit" -> Scroll to "Privacy" at bottom of page -> Under "Visibility" select "Only show to registered users" -> Select "Update All Works"
Megathread with more info + how to request your own works be removed: https://www.reddit.com/r/AO3/comments/1k6ie6v/ao3s_data_was_scraped_for_ai_what_to_know/