It's just the site Steemit and the condenser code that has that list of accounts they block. It's a frontend thing, not a blockchain thing.
The account I tested was new, I didn't delegate anything to it or just 15 SP, and was getting a resource denied for a post attempt, but it was saying I only had X when it needed X-5000 for example. So i had enough. That's the bug.
KURE doesn't use the Steemit list, or any list. It's not nodes, it's just the site. @edicted mentioned that a while back, to allow accounts to block people on their page, I think it was. Enabling that functionality is part of the plan in the future ;)
Well, my information was provided by @a-non-e-moose who is my source regarding nodes. I note that Steempeak also features the censorship, and not Steemit alone. I have been told Busy also does, but less so, as there seem to be other nodes they use also.
Steemit.com can't censor Steempeak.com, nor Busy.org, so something off the website itself is part of the mechanism.
Edit: I'd like to be able to censor certain automated comments that are blowing up my notifications. That would be great!
I flag trash. You have received a flag.