Thread:Project:Support desk/Multiple account creation spam - IP block unhelpful

This page is constantly under attack, despite the numerous ip blocks from the same person, is unsuccessful, as new account is created immediately after. There is constantly a lot of drug related spam links to invalid sites. Ip block is not working, how else can you stop spam. Need working solutions, thanks. Can you restrict moderators for this site, rather then the open venue that it is now?

http://aikawiki.mezurashi.com/index.php?title=Persia&action=history