I really enjoy servers like these but they are very far and few between, the only one that has seen any success In recent years is Purity Vanilla, but it's a bit too big and old for my liking.
Essentially what a vanilla-anarchy / semi-anarchy server is is a server where anything within the world of unaltered minecraft goes. So you can grief build steal etc., but you can't use exploits or hacked clients.
I'm looking for a vanilla anarchy that is either really young (less than a month), or a few months old and averages 20-30 players on at once. No /trade, /tpa, or /home etc. If you know of a server like this I would love to hear about it.
I know at least a few replies are going to say "that isnt real anarchy there isnt hacks stop calling it an anarchy server," and to you a say then don't reply. People like you don't add anything to discussions