Polling frequency

Author: simonw

ics/google-calendar-ics-subscribe-link.md

@@ -11,3 +11,7 @@ For example: https://www.google.com/calendar/render?cid=webcal://pretalx.com/pyc
 This drops the user into the a Google Calendar interface with a prompt for them to confirm their subscription.
 
 I believe this only works if you are serving your ICS feed over HTTPS.
+
+## The catch: polling frequency
+
+Unfortunately as far as I can tell Google Calendar polls for updates to the feed less than once every 24 hours. This is frustrating, as it makes this feature far less useful than it could be.