I disagree, Arizona Web. I actually feel that PR has somewhat of a direct correlation with google search engine traffic. For example, these forums have lots 'n' lots of nested pages. However, many of the individual threads aren't listed in the search engines. I think that if I could get my forum index and thread listing pages to have a higher PR, google will spider and index more of my threads. But, yes, Alexa is just meant to be a general ranking. When I look at any Alexa ranking, I always seem to automatically attach the phrase "for entertainment purposes only" to it

I actually always laugh when I see advertisements such as "website for sale! alexa ranking of 75,000!! offer won't last long!"
Dani the Computer Science Gal