martinibuster - 4:59 am on Mar 16, 2010 (gmt 0)
what if a different dampening factor were used on internal pagerank vs external?
I apologize for quibbling, but it's worth noting something about the phrase, Internal PageRank. The phrase "internal pagerank" is generally used to denote the official pagerank score as seen at the GooglePlex. So for the sake of keeping our terminology straight, maybe we should not be calling the flow of PR within a website internal pagerank. Maybe something like internal pagerank flow is more accurate?
However, as I understand it, there is a dampening factor that affects how far PageRank will flow within a site. It gets back to the random surfer described in the original paper. At a certain point the random surfer will click out of a site or find what they want and leave. As I understand it, PR flow emulates that process, hence a decay.