Search Engines responded by developing more complex ranking algorithms, taking into account additional factors that were more difficult for webmasters to manipulate.[bribe needed] Je January 18, 2005, Google announced it had partnered with other Originel search engines to introduce the rel=“nofollow” attribute. It encouraged users to add the nofollow attribute https://traficorganique88753.verybigblog.com/33517404/fascination-propos-de-propulser-site-web