NoFollow Can Work as SE Optimization Tool

The nofollow attribute is just a mechanism that gives webmasters the ability to modify PageRank flow at link-level granularity. Plenty of other mechanisms would also work (e.g. a link through a page that is robot.txt?ed out), but nofollow on individual links is simpler for some folks to use. There?s no stigma to using nofollow, even on your own internal links; for Google, nofollow?ed links are dropped out of our link graph; we don?t even use such links for discovery. By the way, the nofollow meta tag does that same thing, but at a page level.
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