As I was responsible for webanalytics for a company, I wasn’t checking my implementation often. Truth is that I was the one doing the implementation and using the data. 90-95% of the time, I was the only concern by the implementation and the only one that can touch it. When I started my job as Consultant (again), I was having the case that you need to check the client implementation very often as you may not be the only one working on that project, also you may have a 2 weeks missions and no time to actually understand how the implementation is built. You want to know what has been or is set on the pages and be able to compare what has been changed recently.