The blog I am working on the most right now is PR 3, over 10,000 links. None of that really means anything, but the traffic is 400-500 Unique a day (best day in March was 1200 U's, and worst was 397 U's) , with 1k-3.5k average page views, depending on the day. My Alexa could 3million for all I care, it is not an accurate reading of traffic popularity or linking so it holds no value for research or resale. Traffic stats from your server, I now know, are going to give you the best vision of if anyone is really visiting your blog.