--- phplist.module.orig	2009-09-26 13:34:39.000000000 +0300
+++ phplist.module	2009-09-26 13:37:03.000000000 +0300
@@ -860,6 +860,12 @@ function _phplist_sync_user($phplistid, 
   }
   
   db_set_active('default');
+	
+  // Allow modules to implement their own synchronization tasks
+  foreach (module_implements('phplist_sync_user') as $module) {
+    $function = $module . '_phplist_sync_user';
+    $function($user, $phplistid);
+  }
 }
 
 function _phplist_update_attribute($attr_name, $attr_type, $attr_val, $uid) {