Private xml/iCal/html links

http://www.google.com/support/a/users/bin/answer.py?hl=en&answer=37106

Your calendar's "Private Address" in XML or iCAL format lets you easily view a read-only version of your calendar from other applications -- like a feed reader (e.g. Google Reader) or a product that supports the iCal format (e.g. iCal for Mac). Your calendar's "Private Address" in HTML format lets you view a read-only version of your calendar without signing in to your calendar account.