Sync with Google Calendars

Does it allow for importing/syncing with GCal?
-Schedule appointments when my GCals aren't already booked
-For events I create, add to the RSVPer's own GCal ( like this: http://www.cliffpaulick.com/blog/2011/create-an-add-to-google-calendar-button-for-a-single-event-eventbrite-facebook-too/ )