sundaridevi - 2:14 am on Dec 26, 2011 (gmt 0)
Just ran across a reference although this says that since 2008 nofollow leaks an equal amount to dofollow links:
[mattcutts.com...] He also says here that nofollow links *definitely* don't pass PR unless there is a bug. But this post is 2 years old, and as he points out things can change. But I wonder if *That* might change.
While that is the best practice for preserving page rank, it might harm sales. I think that a lot of people have come to expect SOME customer-service oriented links in the footer of a site.
It would be the optimal method for allocating page rank across the site. Of course depending on the site there may be other objectives that must be considered as well.