Try submitting a URL from the following domains, and it will be automatically flagged (but you can't see it's flagged unless you log out):
- archive.is
- watcher.guru
- stacker.news
- zerohedge.com
- freebeacon.com
- thefederalist.com
- breitbart.comEdit: about 67k sites are banned on HN. Here's a random selection of 10 of them:
vodlockertv.com
biggboss.org
infoocode.com
newyorkpersonalinjuryattorneyblog.com
moringajuice.wordpress.com
surrogacymumbai.com
maximizedlivingdrlabrecque.com
radio.com
gossipcare.com
tecteem.comRe shadowbanning (i.e. banning a user without telling them), see the past explanations at https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que... and let me know if you still have questions. The short version is that when an account has an established history, we tell them we're banning them and why. We only shadowban when it's a spammer or a new account that we have reason to guess is a serial abuser.
This is a big problem with trying to explain these things - people mean very different things by the same words, and it leads to misunderstanding.