I own a site (actually business site) and was doing some PPC to get us up and running. At the same time I targeted a few terms which were reasonable to rank for. After doing some competitor backlink analysis, the number one site had multiple high PR (from PR3 to PR6) links from Chinese web pages, even pointed to inner pages for relatively low competition and traffic keywords. Everything about this screamed spam to me, but I'm a noob when it comes to blackhat techniques.... has anyone seen this and if so how do you see them acquiring links like these? Straight up cash or some type of elaborate hack?