Re: If I have multiple accounts, whether it will be banned?

No you can't get banned for using multiple accounts on one ip.

If I use 1 computer and 1 IP address there are many accounts that I use, but I never do spam and never break the rules, whether I'll be banned permanently?

Unfortunately, no. However selling of accounts is "frowned upon" - for whatever that's worth.

thank you sir, I never have idea to selling my accounts. i have multiple accounts only for fun because i like debate

Why do you need multiple accounts to debate? Can't you just debate on one account and give all your evidence for the debate on that one account? I don't see the need for multiple accounts if you just want to debate on them.