Something I noticed when I searched for the spambots:

* With [url=http://www.roleplayerguild.com/users/tytyu97]tytyu97[/url], the user is already appearing at the top of Google's search results.  I never knew Google would be so fast with their indexing.

* Tytyu97 also seems to be attacking [url=https://www.google.com.au/search?q=tytyu97&ie=utf-8&oe=utf-8&gws_rd=cr&ei=-O1kV6KKIYSX0gSwyZ3wDA]other forums[/url], though we can't see its posts.  

* The English-styled names such as standingkoo are marked as spambots by [url=http://www.stopforumspam.com/ipcheck/61.110.120.203]stopforumspam[/url].

* I don't know any of this will help, but just thought I'd post it anyway in case helps in any sleuthing/countermeasures.