Clarify which bots are not counted for usage

docs/usage.md

@@ -15,7 +15,8 @@ Altis measures your usage based on requests made to the WordPress-based content
 
 Page Views are any requests made to your WordPress-based content management system which invoke your application.
 
-Views are intended to count users who access your site, and exclude static content (such as CSS, JS, and images) and known bots.
+Views are intended to count users who access your site. They exclude static content (such as CSS, JS, and images) and blocked
+requests, including attack attempts and those from known-bad bots.
 
 ## How are views measured?
 
@@ -26,9 +27,9 @@ For customers who are using their own CDN, similar statistics generated by the l
 
 ## What traffic is excluded?
 
-Requests made by Altis automated systems and other known bots are excluded from views, even if they invoke the backend. Altis makes
-a best-effort attempt to exclude bot traffic, however cannot guarantee that all bots will be excluded. Altis also uses general
-firewall rules and best practices to block and mitigate malicious traffic.
+Requests made by Altis automated systems and badly-behaved bots are excluded from views, even if they invoke the backend. Altis makes
+a best-effort attempt to exclude zero-value bot traffic, however cannot guarantee that all bots will be excluded. Altis also uses
+general firewall rules and best practices to block and mitigate malicious traffic.
 
 Enterprise environment tier customers may work with the Altis team to create custom firewall rules to block additional traffic.