I had never used Sharkey before today. I just created an account on the Sharkey instance and I don’t really know how to use it. If I’m correct in assuming Sharkey is similar to Mastodon, I don’t know if I’d use it much. I know I don’t post or comment very often on Burggit but I’ve always felt that the “Reddit” style social media sites like Lemmy work better for discussions and it seems like people are more likely to not just see but also respond to your posts.

Outside of atfbooru, sankakucomplex and gelbooru, the only other website I’m aware of is e621 but that site mostly contains furry hentai.

Also, if you use gelbooru, you have to manually enable loli/shota hentai in the settings.