def random_password(length=10)
  @words ||= File.readlines("/usr/share/dict/words").reject { |w| w.strip.length != length }.map { |w| w.strip.downcase }
  w1 = @words[rand(@words.length)][0,3]
  w2 = @words[rand(@words.length)][3,3]
  w3 = @words[rand(@words.length)][6,4]
  return "%s%s%s%03d" % [w1, w2, w3, rand(1000)]
end