note on the forum to not post through nabble

Author: kimchy

community/forum/index.html

@@ -11,6 +11,10 @@
     You need to <a href="http://groups.google.com/a/elasticsearch.com/group/users/subscribe">register</a> with your google account to the list. At the bottom left side pane, enter your google account user (email) continue with the login process. Below you can find an embedded nabble mirror of the mailing list. You still need to <a href="http://groups.google.com/a/elasticsearch.com/group/users/subscribe">register</a> to the google groups mailing list in order to post.
 </p>
 
+<p>
+    Below is a nabble mirror of the forum. Nabble seems to not always post messages to the mailing list, so make sure to post directly through google groups.
+</p>
+
 <a id="nabblelink" href="http://n3.nabble.com/ElasticSearch-Users-f115913.html">ElasticSearch Users</a>
 <script src="http://n3.nabble.com/embed/f115913"></script>
 </div>