This is just my own opinion and also I want to know your opinion too, because of too many newbies registering right now and spamming shit post everywhere not following the rules just to increase their activities to become a Jr.member fast and join signature campaign, my suggestion is to increase the payment of bitcoin involve on (Evil IP) on registering so that newbies will serious about this forum, sorry for the bad English, not native English speaker.
Most of the people who sign up here likely won't have to pay anything at all so anyone can create thousands of accounts from their home IP or any other one that hasn't yet been banned. You only have to pay the evil fee on previously abused connections (ie tor or if you've had accounts banned) so this won't really matter. I wouldn't be against limiting accounts to one sign-up per IP as people would quickly run out of fresh connections.
You have a point there, I will change the Title of this Thread to "Increase The Bitcoin payment of newly registered accounts involve in Evil IP on Bitcointalk.org" Evil IP means these account doing a suspicious activity like Tor VPN etc.
It won't really matter. If you make it so expensive people just won't bother paying it and will just try another proxy or use their local McDonalds/Starbucks connection until they find one that isn't blacklisted.