few suggestions : link to pf-badhost and stupid tip

issues/issue-3/50_TIPS.html

@@ -2,5 +2,8 @@
 <div class="puffies" aria-hidden="true">🐡🐡🐡</div>
 <h2>Shell tips</h2>
 <p>
+Display the current month calendar with current day highlited:
+
+<pre>cal -m | sed "s/ $(date +%d) /$(printf " \033[1;30;44m$(date +%d)\033[0m ")/"
 </p>
 </article>

issues/issue-3/70_LINKS.html

@@ -2,6 +2,6 @@
 <div class="puffies" aria-hidden="true">🐡🐡🐡</div>
 <h2>Going further</h2>
 <ul>
-    <li><a class="permalink" href=""></a></li>
+    <li><a class="permalink" href="https://geoghegan.ca/pfbadhost.html">pf-badhost</a> blocks many of the internet's biggest annoyances, you may giveit a try.</li>
 </ul>
 </article>