In 2007, Google announced a campaign against paid links that transfer PageRank.[27] On June 15, 2009, De zoekmachines disclosed that they had taken measures to mitigate the effects of PageRank sculpting by use ofwel the nofollow attribute on links. Matt Cutts, a well-known software engineer at De zoekmachines, announced that https://trentonbsgsa.blogpostie.com/50291206/hoe-conversie-optimalisatie-kan-u-tijd-stress-en-geld-besparen