diff --git a/web/templates/about.html b/web/templates/about.html
index 085a749..ce94bd8 100644
--- a/web/templates/about.html
+++ b/web/templates/about.html
@@ -8,7 +8,7 @@
 			<br>
 
 			<h3>Network map</h3>
-			<p>The network page has a map of Yggdrasil's spanning tree as it is now. The map is not complete since it is hard/impossible to get a full picture of the network, and it only includes the minimum subset of links needed to construct the spanning tree.</p>
+			<p>The network page has a map of Yggdrasil's spanning tree as it is now. The map is not complete since it is hard/impossible to get a full picture of the network, and it only includes the minimum subset of links needed to construct the spanning tree. The known nodes and tree coordinates are taken from <a href="http://y.yakamo.org:3000/">Yakamo's API</a>. You can submit your node's view of the network by periodically running <a href="https://github.com/yakamok/Niflheim-api/blob/master/send-view.py">send-view.py</a>.</p>
 			<!--
 			<h3>Node names</h3>
 			<p>For now, node names are assigned manually. You can submit Pull Request to <a href="https://github.com/zielmicha/nodedb">nodedb</a> if you want to have your node named.