Tess is right on! I have used Google Analytics for a few years now and it has more to offer than I have time to take advantage of. One very useful report item is the global map - you can see right down to the city, how many people have been to your site. It is simple and much easier to interpret than any of the others I have seen. I use it for client sites I have done as well which helps drive future business to me because I can talk about how to enhance certin pages that are not getting viewed.