Many thanks to those who have provided feedback on the book so far. A couple of typos have slipped by me, so I wanted to post them here immediately. Please add if you find more. I will create a separate corrections page if needed. Note: this post is for the first edition of the book. The second edition (2010) errata post is part of the Pro Lounge. page 180, Differentiating Regional Search Engines: The placement of this code has had to change due to recent updates in the GATC. See the following post: www.advanced-web-metrics.com/blog/2009/12/15/customising-the-list-of-search-engines-in-google-analytics/ page 181/182: The code pageTracker._addOrganic(“images.google”, “prev”); should be placed just before the line pageTracker._initData(); – Not after, as mentioned on page 178 (grey box, positioning of GATC hacks). pageTracker._addOrganic(“images.google”, “prev”); pageTracker._initData(); page 191, point a (referring to Figure 9.8a): The regular expression pattern should be: (?|&)(q|p)=([^&]*) as shown in Figure 9.8a. Note the change in position [...]