def metadates_good?
      return unless @page
      return false if @all_titles.size > 1 || @meta_data.empty?
      node_names = []
      @meta_data.each { |node| node_names << node['name'] }
      node_names.compact!
      node_names.uniq.size == node_names.size unless node_names.nil? || node_names.size < 1
    end
def metadates_good?
      return unless @page
      return false if @all_titles.size > 1 || @meta_data.empty?
      node_names = []
      @meta_data.each { |node| node_names << node['name'] }
      node_names.compact!
      node_names.uniq.size == node_names.size unless node_names.nil? || node_names.size < 1
    end
check meta and title tags duplicates