More servers will be included soon.
Hits represent actual transactions between a web browser and the web server.
Page views, on the other hand, represent only the actual pages you requested, so in the above example there would be only one page view generated. So, if you were to visit the site and look at several pages, that would count as one user session. If you were then to walk away from your computer, with the browser still open on one of the pages, and return more than 30 minutes later, and again look at several pages on the site, that would count as a second user session. Visitor sessions are a more accurate measure of visits to your site, in most cases, than hits or page views. This is an imperfect measure, because the only hint the browser usually gives the server about its identity is its IP address.