added one more metadata note to privacy policy

src/pages/privacy-policy.astro

@@ -10,6 +10,9 @@ import Layout from '../layouts/DefaultLayout.astro'
       <h1 class="is-title-1 c-main-title">Security & Privacy</h1>
     </section>
     <section class="c-container-middle">
+      <p>
+        <i>Last updated: August 2, 2024</i>
+      </p>
       <p>
         We were tired of Silicon Valley companies telling us that they "take our privacy and security very seriously", while having regular data breaches and storing our personal data unencrypted in their databases — ripe for the picking by hackers and rogue employees. We were tired of fake "privacy settings" that offered no real privacy.
       </p>
@@ -68,6 +71,7 @@ import Layout from '../layouts/DefaultLayout.astro'
         <li>Usernames registered</li>
         <li>IP addresses (useful in case our servers come under DoS attack)</li>
         <li>How many groups are on a server</li>
+        <li>For each group, how many invites have been created and used (but not who has used them).</li>
         <li>Server log information such as the URL requested, time of request, and user agent</li>
         <li>Any billing-relevant information</li>
       </ul>