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fathom - 7:13 pm on Jun 4, 2002 (gmt 0)
An inbound link is "a vote" for your site. A page with 2 outbound links (one of which is going to you) divides that vote in half (that PR value) 4 outbound links (one of which is going to you) divides that vote in quarters (PR). Although their are many other factors your "targets" for linking to you should be on topic - relevant to your "PAGE" content higher or same PR (having a no PR (grey bar) could be a diamond in rough but since not indexed you really don't know if this is good or bad linkage). Best to use a Javascript link from your page so a potential PR0 site doesn't affect your site. LESS IS MORE - your site PR3, a site (page) with PR5 and 100 outbound links (only 1 to you) is worth less to you than a site (page) with PR4 and 1 link (yours).
Vitaplease has a great writeup on this but I can find it.