What are Hits?
Hits are credits that convert to website traffic. They are automatically used to display your submitted sites to other members according to settings assigned.
Hits also represent the number of times your site has been visited. You can track that on your website through a web analytics service like Google Analytics.
Hits are coming from all over the world from a variety of most popular browsers.
You can see the overview of your received hits on the graph on the account page.
You can read more on the topic of getting Hits here: How do I get Hits?