Great read. Along those lines, and hopefully not too far off topic, what I've done with
nofollow is to "take control of
PR flow". I've used nofollow on internal pages to "flow"
PR to
pages I deem important for the site's credibility. I've nofollowed my contacts / about /
accessibility statement / etc" - and in theory, this should allow the existing and incoming
PR
to "flow" to my other pages.