def subdomains(tld_length = 1)
      parts = host.split(Merb::Const::DOT)
      parts[0..-(tld_length+2)]
    end
def subdomains(tld_length = 1)
      parts = host.split(Merb::Const::DOT)
      parts[0..-(tld_length+2)]
    end
==== Parameters
 tld_length<Fixnum>::
   Number of domains levels to inlclude in the top level domain. Defaults
   to 1.

 ==== Returns
 Array:: All the subdomain parts of the host.

 :api: public