Geoffrey Mack from Alexa has a new hobby – comparing Alexa stats with "real" traffic stats:

http://awis.blogspot.com/2006/11/i-have-new-hobby.html

This post is obviously in response to the many, many, many people who say that Alexa data is worthless – and he's trying to convince them otherwise. Sure, it's going to be accurate for some sites but I think there are still too many flaws in their methods for Alexa to be taken seriously...

Right, if I want to have an objective analysis of whether or not Alexa stats suck, I'm going to rely on what someone working at Alexa tells me! :)