🚀 go-pugleaf

One approach, frequently used by bulletin board operators, is to make the
'upload' area write-only for the public.  Stuff is moved into public
download visibility only at the admin's discretion.

This way, you may still get 'SEXY BBS' notices uploaded, but you don't
have to worry about your reputation suffering as colleagues notice them
before you do.  Nor does the uploader get the satisfaction of seeing
his 'contribution' added to your collection.

I'm not sure whether FTP supports this approach directly, but at worst
you could have a 2-minute daemon that moves new files from /ftp/tmp
to somewhere private.