In 2007, Google introduced a marketing campaign against paid inbound links that transfer PageRank.[23] On June 15, 2009, Google disclosed which they had taken steps to mitigate the results of PageRank sculpting by use with the nofollow attribute on backlinks. Matt Cutts, a perfectly-recognised software package engineer at Google, announced https://wayloniyzwu.slypage.com/32918382/a-review-of-seo-company