diff --git a/defaultwelcome/help_tlshares_en.md b/defaultwelcome/help_tlshares_en.md
index 75f2364e8..840af66da 100644
--- a/defaultwelcome/help_tlshares_en.md
+++ b/defaultwelcome/help_tlshares_en.md
@@ -2,3 +2,5 @@
 Shared items are typically physical objects or local services, exchanged or given away without use of money.
 
 For example, you may want to share **equipment** between members of a sports team on the same instance, share any surplus **clothing**, share **gadgets** which you are no longer using, or share plants and gardening **tools** between people using the same growing space.
+
+In order to avoid spam, shared items are not federated via ActivityPub and are local to members on the same instance.