rolling.html: Add a (mostly) reassuring privacy notice.

diff --git a/rolling.html b/rolling.html
index e03673d..089af32 100644 (file)
--- a/rolling.html
+++ b/rolling.html
@@ -149,7 +149,8 @@
 --></script>
 <p>This page is only really interesting because it contains a Javascript
 program.  You seem to have Javascript turned off, so it won't work very
-well.
+well.  It only requires first-party scripts;
+see <a href="#privacy">Privacy</a> for more details.
 </div>
 
 <h3>Background</h3>
@@ -218,6 +219,14 @@ patches</a>.
 the text was written by Mark Wooding and Gary Wooding.  The data used
 to derive the computation was provided by Gary Wooding.
 
+<h3 id="privacy">Privacy</h3>
+
+<p>There are no cookies or other trackers here.  This page does not use
+externally hosted scripts, fonts, images, or anything else.  The server
+has logged your IP address, which helps me fix things if they go wrong;
+mostly things work fine and the logs are discarded after a couple of
+weeks.
+
 </div>
 </body>
 </html>