eXTReMe Tracking
Largest users
eXTReme Tracker is a very easy-to-use (if you can handle pasting the supplied code directly into your index.html file) and reliable system. The system went down for a short while in early 2000 but now the upgrades have been completed and the capacity of the site has improved, you shouldn't have any problems.
The disadvantages of the Extreme Tracker are that any visitor to your site can click on the Extreme Tracker button (which, on the plus side, is actually quite small) and look through all of your site's statistics. Of course, they can't get access to any of your private details but they can see how many visitors your site gets and how they get there. If you're going to need a tracker for a large commercial site, you will probably want to pay the small fee for the private version of the tracker, although for all other sites the free version should prove more than adequate.
