I am no statistician, I sell cars.  However, I like facts.  Some facts are hard to understand(at least for me).  Like  Alexa.com page ranking system.  You can go to their site and type in any website to find out what the ranking is of that paticular site is. The higher the page rank, the more popular the website, right?  So, presumably,  this means that if you have a low number that traffic to that site is high?  What are the other factors? So, I decided to do an experiment.  I did this the other day, so these figures are based on the day I did it (10/24/07, united nations day).  I looked up some of the blogs that I visit from time to time, checked their Alexa rank and then counted how many comments were made on their blogs for a five day period, October 19 thru October 23.  These are the results.
               
 Website                      alexa rank           5 day
  shoemoney.com              2,525             404
  johnchow.com                 2,460             819
  johncow.com                 13,061             239
fatmanunleashed.com   159,577              75

Now, keep in mind, a site with a larger number presumably mean less hits.  By his own admsision Shoe has over ten thousand unique hits per day.  How many hits do the others get?  I don't know.  But lets assume that Shoe and Chow get around the same hits, that would mean that more visitors to Chow left more comments than at Shoe.  There too many factors to figure out why, so I won't and can't second guess those results.  The next assumption I will make is this.  If Shoe or Chow both had 10k visits per day over my study period that would be 50,000 hits.  I don't know the percentage of repeating visitors, as I know I visit Shoe's site at least 5 times per day.  But, just using simple math you could say that .0404 of the visits resulted in a comment. (btw, I know my figures are based on skewed numbers)
So, without knowing actual hits during period of test, there is really know way to get accurate results.  However we do have some real numbers by way of Alexa.
As stated above, the lower the Alexa number, the better.  So, just strictly going off those numbers is is the results: Fatmanunleashed.com actually gets more comments per visitor then anyone else on the list.  However, because of his hits/visits are not even close to the other three, it obvious he makes no where near what they make, at least not with that site.  But, then again, is his goal to make money with his site?  Does his site appeal to less of the internet population?  I think we can all agree that there are lots of fat (over weight) people out there.  But, of those fat people out there, I would guess that most would rather learn how to make money than lose weight.

I have to be honest here. I couldn't figure out how many actual hits a site has by using Alexa.com. Does someone out there know how to interpret Alexa's rank?  Is there other ways to actually know how many hits a site as, unique or otherwise?