threading in ruby: original implementation and the one with threading

threaded.rb

def scrape_away(args)
    threads = []
    self.job_url_collection.each do |job_url|
      threads << Thread.new do
        job_doc     = Nokogiri::HTML(open(job_url))
        title       = job_doc.css(args[:title_selector]).inner_text.strip
        company     = job_doc.css(args[:company_selector]).inner_text.strip
        source      = self.source
        job_url     = job_url.strip
        location    = job_doc.css(args[:location_selector]).inner_text.strip
        job_type    = job_doc.css(args[:job_selector]).inner_text.strip
        telecommute = "Empty for now"
        description = job_doc.css(args[:description_selector]).inner_text.strip

        self.job_database.insert_row([title, source, job_url, company, location, job_type, telecommute, description])
      end
    end
    threads.each(&:join)
  end

unthreaded.rb

def scrape_away(args)
    self.job_url_collection.each do |job_url|
      job_doc     = Nokogiri::HTML(open(job_url))
      title       = job_doc.css(args[:title_selector]).inner_text.strip
      company     = job_doc.css(args[:company_selector]).inner_text.strip
      source      = self.source
      job_url     = job_url.strip
      location    = job_doc.css(args[:location_selector]).inner_text.strip
      job_type    = job_doc.css(args[:job_selector]).inner_text.strip
      telecommute = "Empty for now"
      description = job_doc.css(args[:description_selector]).inner_text.strip

      self.job_database.insert_row([title, source, job_url, company, location, job_type, telecommute, description])
    end
  end