diff --git a/include/config.php b/include/config.php
index fe675bc33f..f565ab1178 100644
--- a/include/config.php
+++ b/include/config.php
@@ -1,5 +1,18 @@
 <?php
 
+/**
+ *
+ * Arbitrary configuration storage
+ * Note:
+ * Please do not store booleans - convert to 0/1 integer values
+ * The get_?config() functions return boolean false for keys that are unset,
+ * and this could lead to subtle bugs.  
+ *
+ * There are a few places in the code (such as the admin panel) where boolean
+ * configurations need to be fixed as of 10/08/2011.
+ */
+
+
 // retrieve a "family" of config variables from database to cached storage
 
 if(! function_exists('load_config')) {
diff --git a/include/poller.php b/include/poller.php
index c88db6e6b5..611dd20bf0 100644
--- a/include/poller.php
+++ b/include/poller.php
@@ -440,7 +440,8 @@ function poller_run($argv, $argc){
 				}
 			}
 			elseif($contact['network'] === NETWORK_FACEBOOK) {
-				// TODO: work in progress			
+				// This is picked up by the Facebook plugin on a cron hook.
+				// Ignored here.			
 			}
 
 			if($xml) {