diff --git a/sites/README.txt b/sites/README.txt
new file mode 100644
index 0000000..2d19bb0
--- /dev/null
+++ b/sites/README.txt
@@ -0,0 +1,5 @@
+
+This directory can be used for a multi-site setup. Multi-site allows you to
+share a single Drupal installation (including core code, contributed
+modules, and themes) among several sites. For more information see
+http://drupal.org/documentation/install/multi-site
diff --git a/sites/all/modules/README.txt b/sites/all/modules/README.txt
index f4e35b5..9181c49 100644
--- a/sites/all/modules/README.txt
+++ b/sites/all/modules/README.txt
@@ -1,4 +1,5 @@
 
 This directory should be used to place downloaded and custom modules
 which are common to all sites. This will allow you to more easily
-update Drupal core files.
+update Drupal core files. It is safe to organize modules into
+sub-directories.
diff --git a/sites/all/themes/README.txt b/sites/all/themes/README.txt
index e942521..8fc55a3 100644
--- a/sites/all/themes/README.txt
+++ b/sites/all/themes/README.txt
@@ -1,4 +1,5 @@
 
 This directory should be used to place downloaded and custom themes
 which are common to all sites. This will allow you to more easily
-update Drupal core files.
+update Drupal core files. It is safe to organize themes into
+sub-directories.