I have a competitor who has 12,000 backlinks to his site that were mostly created when his site was part of a large blog network. Every blog in that network had dynamically rotating links to other blogs in the network. He has since taken his blog off the network, but Google still has those backlinks indexed. As proof, I searched his backlinks, then went to the page a backlink was supposedly on, and the actual link was no where to be found on that page. How long will it take Google to realize none of these links actually point to his site? Can I speed up the process? I know you can report a site, but in this case, he's done nothing wrong - he's just getting credit for backlinks that no longer actually point to his site.