Ping privacy

See #1456

Make author encouragement stronger, note current reality.

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>