I like when you can view your analytics very easily, there is no need to download any software or log in anywhere else other than this tool which makes it super easy! The only thing that could be improved would be if they added more metrics for mobile traffic so we have access from all devices/browsers as well but overall great product!! If using google adsense with Google Analytics then go ahead because its free of charge compared to some others out their who are charging monthly fees. We use GA at our client's businesses site (website) where most customers come through search results rather by an advert click etc.