Google has confirmed that the recent update to its "visible PageRank" system is an effort to crackdown on sites trying to rig this closely-watched web popularity contest. Over the weekend, Google search engine guru Matt Cutts told Search Engine Journal that the company is intent on punishing web publishers that attempt to sell their PageRank currency to other sites.
A site with a high PageRank can often boost the rank of a less-popular site simply by linking to it. As a result, popular sites will often provide such links in exchange for cash. And Google doesn't like that.
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