Google just came out with a new sync system for Google Calendar. That’s pretty good. It will sync your calendar in Outlook up with your online calendar on Google.
But if you have Plaxo I don’t see what this brings you. Plaxo syncs with more systems, not just Outlook and Google (I use Plaxo on my Mac too, so my iPhone’s calendar is always sync’ed up with my Google Calendar and Outlook.
What do you think? Why aren’t you syncing your calendars?