In a recent Webmaster video, Matt Cutts confirmed that Google has tried internal versions of its search engine that work entirely without links. The results are low-quality – “for now,” he said. But this suggests that the value of the almighty link has come into question at Google, and they may be working on a version of the PageRank algorithm that doesn’t depend so heavily on the link graph – which means PageRank as we know it might be on the chopping block.