Read it somewhere ,
"when you create too many accounts from a single IP , the IP is considered as a TOR Node or a public proxy and it is banned and thus you can not make anymore accounts though you can still use the one's already made and they won't be banned"So it's better you use some proxy to make the accounts , account trading is really so much atm , i see Digital Goods Section full oF BCT account , it should stop though sadly i don't think it's possible

I doubt this is true. If you have your accounts banned for spam and create to new accounts that in turn get banned for spam your IP and network gets "evil points". This will allow you to create further accounts, but you have to pay a few btc in order to use them.
What you wrote sounds like the board would be banning Tor nodes.