Hi all, I have taken action and right now I am working towards building relevant links to my sites. I want to follow a 2 tier system where tier 1 pointing to my link and tier 2 linking to tier 1. In what case would I need to use VPN or proxy? I know I have to use private networks for backlinking to my tier 1 from tier 2. But should I use private networks when linking back from my tier 1 to my money site for example from article directories and creating free blogs. I appreciate any advice.