diff --git a/README.md b/README.md
index cc7200b..9ba74d2 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
-# Mastodon_Tools
+# Mastodon Tools
 
-Various little tools for interacting with Mastodon.  You will need to register for a access token on your Mastodon instance.  Ask your admin if you're unsure.
+Various little tools Python for interacting with Mastodon.  You will need to register for a access token on your Mastodon instance.  Ask your admin if you're unsure.
 
 ## On This Day
 
@@ -10,4 +10,10 @@ This service shows all the posts you made on this day in previous years.
 
 ## Threads
 
-This lets you visualise a conversation tree. Give it the ID of any post on your instance and it will get all the replies to it.
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+This lets you visualise a conversation tree. Give it the URL of any post on your instance and it will get all the replies to it.
+
+Usage:
+
+`python3 threads.py https://your_mastodon.instance/@username@their.instance/1234`
+
+⚠ Note! Large conversations may take a long time to retrieve from the API.
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