So, I was playing around with Outlook 2007 last night and noticed that the calendar feature of program supported the publishing of calendars to My Office Online. Pretty interesting feature, I must say.
Currently, I'm using Google Calendar for keeping track of my scheduled events (private & personal) and I have publushed it for people to see. It works pretty good and I've been happy with thus far. The thing that got me interested with Office Online is the fact that it offers a web interface and that I can use Outlook as a Windows client (that's one feature that I would like to Google calendar would have ... along with allowing you to import iCalendar files).
Anywho, I'm just playing around with it at the moment and still to give it the full run-down.