In 2007, De zoekmachines announced a campaign against paid links that transfer PageRank.[27] On June 15, 2009, Google disclosed that they had taken measures to mitigate the effects of PageRank sculpting by use of the nofollow attribute on links. Matt Cutts, a well-known software engineer at Google, announced that De https://zoekmachineoptimalisatie08416.blogpixi.com/28309812/de-2-minutenregel-voor-beeldoptimalisatie