Search Engine Optimization (SEO) and data analytics seem to be the focus of monetized sites these days. Knowing who comes to your site, how long they stay, from whence they come, and how they navigate through your site is valuable information. There are many services/packages which can provide this type of information to a site owner. I’ve always been a bit perplexed by the difference in numbers I would receive from the different packages for the same site within the same timeframe.
This guy has done a nice comparison of some of the more popular web analytics packages, and provides some of his own data and analysis.
Check it out: 2007 Web Analytics Shootout