I was thinking of setting up a system to highlight sock-puppeters and other consistent-rule-violating accounts, as a 'fun project' that might improve the HN experience. But it strikes me that the HN staff probably already does something like this, they may not welcome a side-loaded project of this sort, and it would require some automated crawling of HN (which again may be unwelcomed). Finally, I don't actually have experience in this area. Is this something that would be welcomed, or unwanted?

My initial thought is to set up a devoted account like "sock_puppet_detector", and using the infrastructure from https://hackersmacker.org/, add any likely sock-puppets as 'foes'.