If bugs are caused due to connections issues to your server. JS-Analytics is hosted on a different site. This means that even though your server is overloaded, or god forbid down, JS-Analytics will still be able to collect the potential errors that could occur due to these extraordinary circustances.
How will your site work with the newest web-browser?
In the world websites live in clients of the site will change their webbrowsers faster than you can test. JS-Analytics works as an early detection system. By using JS-Analytics you can quickly detect if clients are having trouble with your site, and react somtimes even before the first bug reports arrive.
How did your work to support a new browser turn out?
JS-Analytics will show you the metrics so you can follow up on your efforts to support specific browsers.