I was pleasantly surprised this morning to see that Google Analytics had changed. Google has added many features to Analytics to allow improved statistics comparison by allowing multiple attributes or multiple sites to be graphed simultaneously. It is thus now easy to compare month to month statistics or to find correlations between variables; say average time on your site and page views.
Another nice addition to Analytics is the ability to export (and email) reports in PDF. Of note as well, Google seems to have eliminated one level of precision when displaying the map overlay geolocation visualization. The region information is now omitted but admittedly, I did not find it that useful to begin with.
Moving to new tracking code – urchin.js to ga.js
Update (Dec 19): As Lisa has pointed out in the comments, I was mistaken when I claimed that Google Analytics could compare stats from multiple sites. Sorry, my mistake! It certainly would be welcome feature if Google is looking for new features to implement.