def keywords(limit = 20)
      @keywords ||= {}
      @keywords[limit] ||= begin
        list = []
        count = 0
        _stopwords = Vidibus::Words.stopwords(*locales)
        for word in sort
          clean = word.permalink.gsub('-','')
          unless _stopwords.include?(clean)
            list << word
            count += 1
            break if count >= limit
          end
        end
        list
      end
    end
def keywords(limit = 20)
      @keywords ||= {}
      @keywords[limit] ||= begin
        list = []
        count = 0
        _stopwords = Vidibus::Words.stopwords(*locales)
        for word in sort
          clean = word.permalink.gsub('-','')
          unless _stopwords.include?(clean)
            list << word
            count += 1
            break if count >= limit
          end
        end
        list
      end
    end
Returns top keywords from input string.