P.S. According to compete.com, his site gets 300K uniques per month - http://siteanalytics.compete.com/getrichslowly.org/
http://trends.google.com/websites?q=getrichslowly.org&sa...
In any case, yes, this blog has a decent sized audience, and would generate a fair amount of income.
http://www.getrichslowly.org/blog/2007/11/11/quitting-the-da...
However, I maintain that getting $10 CPM for a finance site, even one without an ad sales team, is trivial.
P.S. According to compete.com, his site gets 300K uniques per month - http://siteanalytics.compete.com/getrichslowly.org/