If you are a new member, you'll receive the next issue to be published after your sign-up date. If you learn the secrets of tracking visitors and their online habits, you can improve your site in all kinds of ways. You might even lure a few more people to it.
Tracking is an inexact science.
No tracking software can guarantee accuracy. If your site has a page with text and four GIF images, calling it up registers five hits. A more meaningful measure of your site's traffic are page views or the number of individual documents requested. An impression is a request for an image or series of images, such as a banner ad. A visit is an instance of a user coming to your site for any period of time.