Hi. There is a new access level for users and groups: "Visible only to Mokum users". It's public, but your posts (and the fact of your account or group existence) will not be visible to anyone who has no account on Mokum, or is not logged in (that includes search engines). You can set this in https://mokum.ru/settings. (As of now, this does _NOT_ hide your comments, this will be implemented shortly). Thanks,
You can check how it works by using the incognito window in your browser. ‎- псы в рапиде
There is now a "Hide images marked as NSFW" checkbox in Settings, for your browser at work. However, please read the disclaimer as this depends on behaviour of other users. ‎- псы в рапиде
You can now hide users, either from their pages, or right after you hid one of their posts. ‎- псы в рапиде