At the Bloggers Meet-up I attended on Friday I had the chance to get a beta invite code for Woopra.
Woopra is a Web Site Analytics program similar in operation to Google Analytics. These type of Analytics differ from the log based Analytics Apps such as AWStats that is provided with most hosting accounts. The reason these differ is that these rely upon Javascript code on each page in order for the Analytics program to work.
In order to start using Woopra, you have to register for an account at the Woopra website. You can then add your websites to your account. If you have a beta invite code, your sites are enabled immediately. If not, you have to wait until they release some more codes and approve your site. I am unaware how long this takes at present.
Once your site is approved, you need to start using the tracking Javascript. There is a WordPress plugin that you enable and then enter the Website ID into the Plugin Configuration Screen, that is found on your WordPress Dashboard. If your site is not WordPress, you need to manually enter the Javascript shown on your Woopra Account just before the