Ficbook is one of those platforms I've spent way too much time browsing, and from my experience, it's generally safe for fanfiction writers, but with some caveats. The site has a decent community vibe, especially for Russian-speaking fandoms, and I've seen plenty of writers upload their work without issues. The moderation seems active enough to handle blatant plagiarism or harassment, though it’s not as aggressive as, say, AO3’s tagging system. I’ve noticed some stories get flagged if they violate content guidelines, but the rules aren’t always crystal clear—especially for non-Russian speakers navigating the interface. Still, I’ve never heard of major data breaches or privacy scandals, which is a plus.
One thing that bugs me is the occasional spammy comments or bot accounts, but that’s pretty much everywhere. If you’re writing in English, the audience might feel smaller compared to Wattpad or FF.net, but the niche communities are passionate. I’d recommend using a pseudonym if you’re wary of exposing your main online identity, though. Overall, it’s a decent spot if you’re diving into Slavic fandoms or want a quieter space to post.