i'm a bit new..
has this user got multiple accounts?
www.dirtclowns.com/Screenshot.png (http://www.dirtclowns.com/Screenshot.png)
www.dirtclowns.com/Screenshot-1.png (http://www.dirtclowns.com/Screenshot-1.png)
They seem to be on the same shared Dynamic IP. Probably the same computer.
Possibly although it could just be that they were given the same IP because of their connection times
this guy's denying it flat out.
apart from the fact they use similar writing style, is it very almost definate?