It's easy to setup, it has great reporting features with graphs that show you where your traffic comes from (segmentation), filters like language etc., can be customized per site/domain or even user-grouped via roles as well. The UI could use some work but overall I have been very happy using this product so far! We've used hitwebcounter for over 2 years now without any issues at all - we're getting around 150k unique visitors each month which helps us understand our audience better in order to improve their experience when they visit one of our sites.