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a) page rank on that page, not the homepage. the page rank has to be on the page you are linked on b) few number of outgoing links on that page, the more links the more the PR gets diluted and spread out c) no funky sites also linked on that site, casino, adult, pharma sites d) straight dofollow link e) anchor text of your choice f) in content link, not on some sidebar or footer, in the content of the paragraph.