mack - 5:39 pm on Mar 14, 2010 (gmt 0)
I think PR is valuable as a ranking factor, but we have no way of knowing what the Page Rank is for any page on the web. The Google toolbar gives us a little bit of information about what is going on, but it's in my opinion no more than the tip of the iceberg.
What we do know is pagerank is a value assigned to all pages in the index, based on links that point to that page. What can we learn from this? Simply that good quality links will help you in Google. Do we really need to know a numerical value? Is it not enough to know that Links work, so lets get them?
The green bar on the Google toolbar is really nothing more than a toy. That is why I don't even have the toolbar.
Google insists on displaying the 'Green Pixel Dust' in the stinking toolbar
Thats an advanced feature than you need to enable :)