Improve ping attribute explanation

sections/changes.include

@@ -14,10 +14,11 @@
   <a href="https://www.w3.org/TR/2018/WD-html53-20180703/">HTML 5.3 Fourth Working Draft</a></h3>
 <dl>
   <dt><a href="https://github.com/w3c/html/pull/1517">Removes the concept of autofill mantles</a></dt>
-  <dd>Fixed <a href="https://github.com/w3c/html/issues/1389">clarify usage of <code>autocomplete</code> attribute on <code>input type=hidden</code></a></dd>
+    <dd>Fixed <a href="https://github.com/w3c/html/issues/1389">clarify usage of <code>autocomplete</code> attribute on <code>input type=hidden</code></a></dd>
+  <dt><a href="https://github.com/w3c/html/pull/1578">Strengthen the encouragement to use the ping attribute for link tracking</a>.</dt>
+    <dd>Fixed <a href="https://github.com/w3c/html/issues/1456">issue 1456</a></dd>
 </dl>
 
-
 <h3 id="changes-wd4">Changes between the
   <a href="https://www.w3.org/TR/2018/WD-html53-20180703/">HTML 5.3 Fourth Working Draft</a>
   and the

sections/semantics-links.include

@@ -1015,21 +1015,22 @@
   in a tooltip.
   </div>
 
-  <div class="note">
-    The <{links/ping}> attribute is redundant with pre-existing technologies like HTTP redirects
-    and JavaScript, in allowing web pages to track which off-site links are most popular, or
-    allowing advertisers to track click-through rates.
-
-    However, the <{links/ping}> attribute provides these advantages over those alternatives:
-
-    * It allows the user to see the unobscured final target URL.
-    * It allows the user agent to inform the user about out-of-band notifications.
-    * It allows the user to disable notifications without losing the underlying functionality.
-    * It allows the user agent to optimize the use of available bandwidth, so the target page loads faster.
-
-    So while it is possible to track users without this feature, authors are encouraged to use
-    the <{links/ping}> attribute, so the user agent can make the experience more transparent.
-  </div>
+    The functions of the <{links/ping}> attribute such as tracking which links are most popular,
+    or allowing advertisers to track click-through rates, can be achieved with HTTP redirects,
+    Javascript analytic software, and the like.
+
+    Nevertheless authors should use the <{links/ping}> attribute for hyperlink auditing,
+    as it provides several advantages, in particular to give users control over their privacy.
+
+    * Because the final target URL is in the link,
+        the user has more certainty about where they will navigate to.
+    * User agents, or extensions, could reliably inform the user about tracking notifications,
+        and allow the user to disable them on a case-by-case basis.
+    * It optimizes the use of available bandwidth, and the target page loads faster.
+
+  <p class="warning">Note that currently no browser is known to offer the user an interface
+  to manage their privacy or even learn when hyperlink auditing is taking place.
+  So unless users have extensions to do this, the privacy benefits are still hypothetical.</p>
 
 <h4 id="sec-link-types"><dfn lt="allowed keywords and their meanings|link types|link type|html link types">Link types</dfn></h4>