diff --git a/README.md b/README.md
index 0927693..344f71e 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,20 @@
 brouter-web
 ===========
 
-Web client for the [BRouter](http://brensche.de/brouter) bike routing engine ([Github](https://github.com/abrensch/brouter)).
-
+Web client for the BRouter routing engine. *Work in progress*.
 
 BRouter online service:  
 http://brouter.de/brouter-web/
 
+This repository is only about the frontend. For the server/backend, BRouter routing engine, Android app, profiles, brouter.de site, see:  
+https://github.com/abrensch/brouter
+
+More information:  
+http://brouter.de
+
+General BRouter discussions/questions, support:  
+http://groups.google.com/group/osm-android-bikerouting
+
 ## Installation
 
 As an alternative to the above online version, the standalone server of BRouter can also be run on your local desktop.
diff --git a/index.html b/index.html
index 62cc100..8503ed6 100644
--- a/index.html
+++ b/index.html
@@ -16,10 +16,8 @@
         <div class="title"><span class="title-name">BRouter-Web</span>&nbsp;&nbsp;<sup class="version">0.4.0</sup></div>
         <div class="header-text">
             'esc' or 'q' to disable drawing, 'd' to enable drawing<br>
-            Web client for <a href="http://brouter.de/brouter" target="_blank">BRouter</a> &middot;
-            <a href="https://github.com/nrenner/brouter-web#readme" target="_blank">about</a> &middot;
-            <a href="https://github.com/nrenner/brouter-web" target="_blank">GitHub</a> &middot;
-            <a href="http://groups.google.com/group/osm-android-bikerouting" target="_blank">contact</a><br>
+            Web client for <a href="http://brouter.de/" target="_blank">BRouter</a> &middot; <i>work in progress</i> &middot;
+            <a id="about_link" href="#" role="button">about</a>
         </div>
     </div>
     <div id="route_options" class="hidden">
@@ -63,6 +61,43 @@
             </div>
         </div>
     </div>
+    <div id="about">
+        <p>
+            Online service of the BRouter routing engine. For the offline Android app and more information see <a href="http://brouter.de/" target="_blank">brouter.de</a>.
+        </p>
+        <p>
+            <i>Work in progress:</i> The web client is still in (slow) development; it has some glitches, 
+            you might miss some essential features and stumble upon bugs. The user interface is subject to change.
+        </p>
+        <p>
+            <i>Contact:</i><br>
+            <ul>
+                <li>
+                    general discussions/questions, support:<br>
+                    <a href="http://groups.google.com/group/osm-android-bikerouting" target="_blank">http://groups.google.com/group/osm-android-bikerouting</a>
+                </li>
+                <li>bug reports and feature requests:
+                    <ul>
+                        <li>
+                            server / backend, routing engine, Android app, profiles, brouter.de site:<br>
+                            <a href="https://github.com/abrensch/brouter/issues" target="_blank">https://github.com/abrensch/brouter/issues</a>
+                        </li>
+                        <li>
+                            web client / frontend:<br>
+                            <a href="https://github.com/nrenner/brouter-web/issues" target="_blank">https://github.com/nrenner/brouter-web/issues</a>
+                        </li>
+                    </ul>
+                </li>
+            </ul>
+        </p>
+        <p>
+            <i>Data:</i> based on <a href="http://www.openstreetmap.org" target="_blank">OpenStreetMap</a>. It is usually updated once a week when a new Planet file is available, 
+            see dates of <a href="http://brouter.de/brouter/segments3/" target="_blank">data files</a>.
+        </p>
+        <p>
+             <i><a href="https://github.com/nrenner/brouter-web#credits-and-licenses" target="_blank">Credits</a></i> and <i><a href="https://github.com/nrenner/brouter-web#readme" target="_blank">more info</a></i> on the client.
+        </p>
+    </div>
 
     <script>
         // global package prefix for BRouter web application
diff --git a/js/index.js b/js/index.js
index 570d430..b6661c1 100644
--- a/js/index.js
+++ b/js/index.js
@@ -115,6 +115,13 @@
         // left sidebar as additional control position
         map._controlCorners[leftPaneId] = L.DomUtil.create('div', 'leaflet-' + leftPaneId, map._controlContainer);
 
+        document.getElementById('about_link').onclick = function() {
+            bootbox.alert({
+                title: 'About',
+                message: document.getElementById('about').innerHTML
+            });
+        };
+
         search = new BR.Search();
         map.addControl(search);