Statcounter.com (free invisible stats system)

We can't rave about this service more. If you need to monitor who's coming and going on your new site. Register at statcounter.com to get a free code that you can place on your web pages. This code then generates a stats system that can be accessed by logging in to their site. You can then view how many unique visitors and page views you've had. It doesn't end there, the service tells you a wide range of details about the visitor and where they have come from. It's a great way to monitor and track your sites marketing and promotion. We even use it on PaperClipping. It makes you feel like Big Brother. :-) It's also highly addictive, we monitor our statistics every day. Have fun.