CainIV - 5:16 am on Apr 14, 2011 (gmt 0)
In my opinion, a site that does not show traffic on these services, regardless of PageRank, has something wrong with it.
I would disagree with the statement.
I have recently developed links from very authority websites who do not have a ton of traffic. Why?
They have no idea how to optimize a single title tag.
All of their internal links are about as far from optimized as possible, and their inbound links are generally the actual websitenameasonelongphrase.com
Not to say this is always the case, but certainly it does happen.