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Let me put a disclaimer here that I do not use high PR networks in any of my seo endeavors. That being said, they have always looked attractive - especially post panda where in content links from high pr websites are valuable. I run seo campaigns for a large lot of websites & have been noticing my competition creeping past me who are using links from these networks to increase their positions for hard to attain keywords. Has anyone here had experience building links using these types of networks? It looks like they are under google's radar for now & are a great way to get some powerful links to your site. Any thoughts on if google will catch onto these types of links if they are properly protected (limited footprint, revolving links, unique content, etc.)? It's tough not to be at least interested in networks like this b/c of the results they provide.