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What is currently the best practice to not let pagerank flow to policy, contact and other less important pages on an e-commerce website? Pages have to be visible on the home page, (currently in the footer) so unfortunately they cannot be moved to a "single" url. How likely is that a PR5 home page can sculpt PR4 first category pages if the # of outgoing links are at a reasonable number and structured well? Currently the home page is PR5, but category pages are only PR3  - and not structured properly...