Add Mastodon link

about.html

@@ -97,19 +97,22 @@ <h3 id="contact">
 	If you learned something from this blog, or otherwise derived value from it, please consider <a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=NZEPYW8KVZ8WL">donating (via PayPal)</a>. No amount is too small - I write this blog for free, so I appreciate any donation.
 </p>
 <p>
-	<a href="https://github.com/ploeh">My profile on GitHub</a>
+	<a href="http://stackoverflow.com/users/126014/mark-seemann">
+<img src="http://stackoverflow.com/users/flair/126014.png?theme=clean" width="208" height="58" alt="profile for Mark Seemann at Stack Overflow, Q&amp;A for professional and enthusiast programmers" title="profile for Mark Seemann at Stack Overflow, Q&amp;A for professional and enthusiast programmers">
+</a>
+</p>
+<p>
+	<a href="https://twitter.com/{{ site.author.twitter }}" class="twitter-follow-button" data-show-count="false">Follow @{{ site.author.twitter }}</a>
+	<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script>
 </p>
 <p>
 	<a href="http://www.linkedin.com/in/ploeh" ><img src="http://www.linkedin.com/img/webpromo/btn_profile_bluetxt_80x15.gif" width="80" height="15" border="0" alt="View Mark Seemann's profile on LinkedIn"></a>
 </p>
 <p>
-	<a href="https://twitter.com/{{ site.author.twitter }}" class="twitter-follow-button" data-show-count="false">Follow @{{ site.author.twitter }}</a>
-	<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script>
+  <a href="https://mastodon.social/@ploeh">My profile on Mastodon</a>
 </p>
 <p>
-	<a href="http://stackoverflow.com/users/126014/mark-seemann">
-<img src="http://stackoverflow.com/users/flair/126014.png?theme=clean" width="208" height="58" alt="profile for Mark Seemann at Stack Overflow, Q&amp;A for professional and enthusiast programmers" title="profile for Mark Seemann at Stack Overflow, Q&amp;A for professional and enthusiast programmers">
-</a>
+	<a href="https://github.com/ploeh">My profile on GitHub</a>
 </p>
 <p>    
     <a href="http://www.last.fm/user/ploeh">My profile on Last.fm</a>