Hi Warren,
I'm going to go out on a limb and guess that you are referring to me. (We have a ranking of 391,887.)
I appreciate the invitation to respond, but I have to say that I am not such a big fan of the Alexia ranking system. From what I understand it is based on data captured from browser toolbars, which makes it possible to manipulate the ranking by installing the tool bar. (Quite a clever promotional device for the tool bar.)
For example, if I had an office with 100 employees, and installed the tool bar into all the computers and set my corporate website as the home page in all the browsers on those computers, I would have a site ranking in the top few hundred thousand relatively quickly on the strength of the few hundred visits per day from my own office.
That is by no means to say that all the data is corrupt, it is certainly a good guide, but I think Page Rank is a better measure. Although not perfect, it is much harder to manipulate.
You can check the page rank of anyones website in a tool like this one:
http://www.showpagerank.net/pagerank-checker.php