We've had our site up for about a year now and are still noticing big chunks of our site that are showing as "unranked" for PageRank. Here are a few examples: http://edufire.com/forums http://edufire.com/videos http://edufire.com/groups We have a sitemap that we generate (located at http://edufire.com/sitemap.xml). Our internal link structure seems to be pretty good. We have good pagerank on our homepage(5) and blog(4). Why does those sections show up as unranked then?