Link	Shared Google Calendar	Google Calendar invites
Others get notification emails	Sì If added to the event explicitly	Sì
Others can edit event	Sì	Sì Only if event creator checks "Guests can modify event"
Custom colors	Sì Per calendar
Each event appears once	No Event appears both in the shared and in the personal calendar if invited. Removal from personal calendar marks as "No" in shared calendar.	Sì
Others get event change notifications	Sì If added to the event explicitly	Sì
Event creator notified of RSVPs	Sì If configured via Reminders & Notifications settings	Sì
Inform others of unavailable times	Sì Mark block as busy and just don't invite others	No Unless bogus-inviting others to unavailable times as an event
Retrospective of events together	Sì Uncheck other calendars	- Search / filtering?
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