We started using the google online calendar a couple months ago... and it's been great. We have 3 calendars (his, mine, ours) & they show up on the same virtual calendar in different colors.

This is a supplement to talking in person, not a substitute. Neither of us can keep our schedules straight in our heads. I don't think I know anyone who doesn't use a calendar, really. The nice thing about having it online is that DH can see it at work.

Another unexpected bonus is that it's easy to see if our individual activities are getting too lopsided. With the color coding, we can see visually when the week's gotten over booked with separate activities, and then we make the effort to compensate with something like a lunch/coffee date in the middle of the week. We love it.

Blueskies