Context:
/r/ProgrammerHumor/ closed for a couple of days, then - "because mods have to listen to the community or otherwise they get replaced by more /u/Spez compliant mods" opened up again, and held a voting which new rules to enforce. The sub opened up with the new rule allTitlesMustBeCamelCase.
I made the first post about 15 minutes after the sub re-opened (because I'm in their discord, I was aware it opened up again, it wasn't announced yet, I think) - and of course I just make a shit-post about John Oliver since it's the /r/pics (and a bunch of other) subreddits way to protesting the API changes.
It wasn't even that good of a post to be honest, it got temporary taken down by the subs' mods since they mentioned "it's only anecdotally related [to programmer humor]" - but after messaging them explaining the context they put it back up. So it's basically approved by the moderators of the subreddit. And not against the content policy of the sub
It got like 3k upvotes in about an hour, so I got a message from some bot that I was on the frontpage of /all/ as well. At the end of the day it had 13.5k upvotes
About 48 hours later I got an automated message:
Your account has been permanently suspended for breaking the rules. This account is permanently suspended due to violations of Reddit's content policy
I posted an "appeal" basically just asking "Lol you banned me for posting John Oliver?"
And the only response I got was:
Thanks for submitting an appeal to the Reddit admin team. We have reviewed your request and unfortunately, your appeal will not be granted and your suspension will remain in place. For future reference, we recommend you to familiarize yourself with Reddit's Content Policy. -Reddit Admin Team This is an automated message; responses will not be received by Reddit admins.
I posted another "appeal" yesterday asking "Could you clarify which Content Policy rule I broke?" To which they haven't responded yet.
It's the only post I made in the last 2 weeks, so there wasn't any other reason to suddenly ban me besides this post...
My reddit account was 12 years old at this point. I was going to leave anyways because the Reddit client I use (sync) already announced it would be shutting down June 30 - so I don't care that much that they banned me - just though it was a pretty weird approach from the Reddit Admins to start banning people for getting John Oliver on the front-page
How do you know/realize you are shadow banned?
No one commented or voted on my comments for a few days. So I logged out and ran a search for my username, and got told I didn't exist.
People not responding to your comments or posts, or not voting, even though it's a post that you may reasonably expect a lot of engagement with. Not an obvious way to tell, but if you've made a ton of comments or posts for a week and there's no engagement with anything, you may get reasonably suspicious.
Log out of reddit or use another account to check your original comment. If nothing comes up, it's been shadow deleted. You might figure it out this way if you have multiple accounts or if you share your posts with a friend. If every one of your posts has been shadow deleted, you're almost certainly shadowbanned