Does PR flow upwards?

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Does anyone know if inbound links to lower pages in a website - and the
resulting PR - will automatically help out the PR of the site's home

Hypothetical illustration (with apologies to non-American readers):
suppose I run a site about baseball stadiums.  There's a homepage with
general ballpark information, and then separates pages for each of the
individual ballpark (i.e. a Wrigley Field page, a Fenway Park page, a
Yankee Stadium page, etc.).  There would be a bunch of inbound links to
the Wrigley field page from Chicago themed websites, inbound links to
the Fenway page from Boston-based websites, and inbound links to the
Yankee Stadium page from New York sites.

So there are very few inbound links to the home page; while the
sub-pages (i.e .the individual ballpark pages) would have many inbound
links.  Will Google give some PR to the root-level home page, based on
the lower level pages having decent PR?  Even though the home page has
few or no inbound links of its own?

Of course, each of the lower level pages will have a "Home" link
pointing to the home page - I assume this would help send PR up to the
home page.

Thanks in advance for your thoughts and insights.

Re: Does PR flow upwards?

__/ [ ray ] on Friday 17 March 2006 15:52 \__

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Google PageRank (as is the case with *any* equivalent rank) propagates from
one page to another, provided there is a link. Rank also 'move' (or "flow"
if you prefer) from one page in a given site to another page in that same
site. If your deep pages do not have a link to the front page or an index,
they *should*. It helps the user. It's important for navigation too.

Breadcrumb trails are most useful if the site is built hierarchically. That
is probably the reason why the front page tends to have higher or equal
PageRank to the remainder of the pages in any given site. It is also the
reason why going deeper leads to lower ranks, /usually/.

Hope it helps,


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Re: Does PR flow upwards?

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This link will carry PR "up" (although - as non-American - I am not sure  
it will work the same way in case of baseball :)

Apart from the fact that PR doesn't matter much these days, I don't look  
at PR of main page as a factor describing popularity of my sites, but at  
the sum of PR of all pages. Thus during last PR update my main page didn't  
change its PR5, but sum of PR for all pages rose by about 30%, while the  
number of pages indexed almost didn't change. Thus I know I have gained  
some PR.


Re: Does PR flow upwards?

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They should each have a  link called "your key phrase of choice" or
whatever is appropriate linking to the home page. Don't waste them by
just putting "home" in the anchor text.


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