arikgub - 3:33 pm on Jan 14, 2012 (gmt 0)
They really are worthless for ranking. Every site I have inspected that had thousands of those kinds of links ranked poorly
Not worthless for ranking. May be not passing link juice, but making the backlink profile look natural.
I wouldn't trust any website for which nofollow links comprise less than 50% of the total backlinks. It is simply impossible for a website that grows its backlinks "naturally"