Checking out a site in OpenSiteExplorer and some of the subpages have a PageAuthority of 1. This is usually down to poor internal linking (as well as 0 external links) to the subpages. Some of these pages are 2-3 months old, PR2 site. Vaguely remember an article about how to structure a site for best distribution of "PageRank" when I was trying to find out about "PageRank sculpting" and think the recommendation was a tiered category approach ("try to do less than 100 links per page") with 3-4 levels. Since the subpages are part of a strategy to target longtail keywords, is this causing them to suffer in the rankings? How do I fix it. I'm not doing blog spam to push the sub-pages if I get the jobs.