diff --git a/todo.txt b/todo.txt
index a744354..1b72070 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,6 +1,7 @@
 - = to do; ? = to do?; * = done; ~ = half done; ! = don't
 
 - if a Gancio post gets edited, will it be posted with a new guid?
+- explain in the help text how gancioff cuts posts that are too long
 * if an image can't be posted, don't post the post
 - make posting images optional
 * gettlds and --update-language-codes should save elsewhere