The use of rel=”nofollow” in your navigation for a website (i.e. :< a href=”http://www.example.com/” rel=”nofollow”>Link text</a>) has been used to decrease the loss of “link juice” of the page the link is on. From http://en.wikipedia.org/wiki/Nofollow “Interpretation by the individual search engines While all engines that use the nofollow value exclude links that use it from [...]