Added info about ?retribute params

src/views/About.vue

@@ -27,7 +27,16 @@
         <a :href="provider.url" target="_blank" rel="noopener">{{ provider.label }}</a>
       </li>
     </ul>
+
     <p>If you would like to add a service to this list, <a href="#contact">please let us know!</a></p>
+    <p>
+      In addition to the platforms listed above, any URL found in creators profiles with a <code>?retribute</code> query parameter will be collected and displayed as well.
+      As a creator, you can leverage this feature to advertise custom retribution platforms, e.g your personal e-shop, or your Amazon wishlist.
+    </p>
+
+    <p>
+      Example: <code>https://mysite.com/wishlist?retribute</code>
+    </p>
 
     <h3>How do you retrieve donation information?</h3>
     <p>