Planet13 - 12:24 am on Jul 1, 2011 (gmt 0)
After all, it is arguable that Google still follow and pass on some link juice on nofollow links. Think Wikipedia.
I don't know about link juice being passed to nofollow links (although in one video I swear Matt Cutts said that ALMOST no page rank is passed in nofollow links).
But what has been stated by Matt Cutts is that putting nofollow links on a page make that Page Rank go into a black hole.
So, for argument's sake, if you have one DOFOLLOW link and 99 nofollow links, the one dofollow link will still only get 1/100th of the available page rank that can flow from that page. The other 99% is wasted, pure and simple.
I guess if I were a black hatter I could find all the guest blog posts of my competitors who received a backlink and spam the comments section (even if they are nofollow) so to make the page rank flow into a black hole.
fortunately for them, I am too busy shooting myself in the foot with all my other nonsense to do this to my competitors...