--- a/web-seo.rst	Wed Feb 08 14:21:36 2012 +0200
+++ b/web-seo.rst	Wed Feb 08 14:23:17 2012 +0200
@@ -13,7 +13,9 @@
   http://www.example.org/robots.txt
 
  * http://en.wikipedia.org/wiki/Sitemaps
+ * http://www.sitemaps.org/
  * http://en.wikipedia.org/wiki/Robots.txt
+ * http://www.robotstxt.org/
 
 Alexa.
 ======