spam.rb

require 'rubygems'
require 'mechanize'

def main
  # e.g. http://youpy.jottit.com/dajare
  url = ARGV.shift

  a = WWW::Mechanize.new { |agent|
    agent.user_agent_alias = 'Mac FireFox'
  }

  a.get(url + '?m=edit') do |page|
    page.form_with(:action => '') do |form|
      form.fields[7].value = generate_spam
    end.submit
  end
end

def generate_spam
  s = ('a'..'z').to_a + ('A'..'Z').to_a + ('0'..'9').to_a
  v = (0...5).map{|i| (0...(i == 0 ? 6 : 12)).map{ s[(rand * (i == 0 ? 62 : 26)).floor] }.join }
  "#{v[0]}  <a href=\"http://#{v[1]}.com/\">#{v[1]}</a>, [url=http://#{v[2]}.com/]#{v[2]}[/url], [link=http://#{v[2]}.com/]#{v[2]}[/link], http://#{v[3]}.com/"
end

main