Review on HitWebCounter by Brent Borseth

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.