diff --git a/usability.md b/usability.md
index 6cc988f1e..a6ea5f9e1 100644
--- a/usability.md
+++ b/usability.md
@@ -1 +1,2 @@
-- [[stoa]] https
\ No newline at end of file
+- [[stoa]] https://stoa.anagora.org/p/usability
+	- [[go]] [[stoa]]
\ No newline at end of file