Stealth banning

Stealth banning (also called Shadow banning and Hell banning) is a practice used by some online community managers to block content added by spammers and Internet trolls, as well as other individuals whose interests do not coincide with the managers'. The practice involves making a user's contributions invisible to all other users, but visible to themselves, making them less likely to create new accounts to add the same material. Often this blocks the problem user's contributions while making it look like they were "lost" due to a website error, thereby enforcing the community best practice of "not feeding trolls." It is used to lower the likelihood of trolls or malicious users from registering new accounts to continue trolling.