Code:
alias spam { 
  var %con = http|www
  return $regex([color:red]$1[/color],/\b(?: [color:red]$+[/color] %con [color:red]$+[/color] )\b/Sig) 
}


Usage: $spam(<text to check for spamming>)

Of course, that's not really a good idea, since "http" and "www" can appear in a conversation without being spam.

New username: hixxy