10-20-2011, 11:42 AM
Problem is, like etojoy already pointed out, that there is only so much link power to pass down. If the forum home page has a PR 8 (lets say its link power is "100"), and it links to 25 sub pages, then each page gets 1/25 of the hom pages link power (100/25 = 4). One of the sub pages is the "Member List" (link power "4"), that links to 20 sub pages (probably some sort of A-Z list of members), those get 1/20 link power (4/20 = 0,8). One of those 0,8 pages links to your profile page and let's say 19 others, so that leaves you with 0,04 link power.
Obviously this is just a very simple example and it is really more complicated than that, but I hope it shows the why a high domain PR doesn't necessarily guarantee high PR on any given sub page.
Obviously this is just a very simple example and it is really more complicated than that, but I hope it shows the why a high domain PR doesn't necessarily guarantee high PR on any given sub page.