Google have just released some new (but experimental) functionality for calendars. I'm not convinced that I would actually find most of them useful...apart, perhaps from the next meeting or who's free functionality. Apparently there's now an experimental (again) API for building one's own calendaring apps.
How to add a button to your website to let people easily add an event (or all your events) from your public google calendar to their own google calendar.
The awesome ProfHacker with a step-by-step guide to quickly getting a bunch of dates into a Google calendar. The author is using it specifically in the context of a course syllabus, but I thought it might also be useful for putting in things like PGCAP dates.
Doodle helps scheduling meetings and other appointments. Doodle is simple, quick, free and requires no registration. Simply set up a poll, send a link to all participants, watch progress online, and finally choose the most suitable date.
Very useful - much clearer and simpler than timebridge which I have used before- timebridge does have more sophistication and enables people to book appointments with you via google calendar - tried it,nobody did - story of my life