Kerr wasn't alone among technically proficient people who wound up posting private
information on Google Calendar. Searching events for "passcode" produced hundreds
of entries featuring toll-free conference lines and numeric codes used by various
companies and their employees. My favorite was an entry entitled "United Airlines
Morning ISD Event Call," which employees apparently use every morning "to report
on issues that concern the Windows Engineering group." (This particular calendar
item has since been deleted.)