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WebGuerrilla - 8:33 pm on Nov 12, 2000 (gmt 0)
Theses sites also contain a navigation structure that uses a footer with all are targeted phrases included in hyperlinks. If a particular subdomain has 50 pages, then each page ends up having 49 internal pages linking to it with a hyperlink containing the targeted phrase.
We have found that Google seems to definitely apply the page rank of the main domain to subdomains. We have launched several subdomains that have no inbound links to them and have had tremendous top ten success.