diff --git a/doc/en/_templates/layout.html b/doc/en/_templates/layout.html
index 51d72c389..daa020cea 100644
--- a/doc/en/_templates/layout.html
+++ b/doc/en/_templates/layout.html
@@ -3,6 +3,12 @@
 {% block relbaritems %}
 {{ super() }}
 <g:plusone></g:plusone>
+
+
+<iframe style="border: 0; margin: 0; padding: 0;"
+        src="https://www.gittip.com/hpk42/widget.html"
+        width="48pt" height="22pt"></iframe>
+
 {% endblock %}
 
 {% block footer %}