What about iCal event tagging for better event organization ?

Question

Actually, it is possible to create several calendars (e.g., Work, Personal, Kids, ...) to organize your events.
Then, you can choose to simultaneously view events of one or many calendars.
But what about a more flexible tagging mechanism ?
We would be able to multi-tag an event.
Then, we would be able to simultaneously view events that match some tags and not some other tags.
We would be able to create intelligent calendar views that simultaneously display events that match some tags and not some other tags.
Tagging is a feature provided today by iPhoto for photos.
Intelligent view based on a expression is a feature provided today by iTunes for musics.
It would be nice to generalize these concepts
Is there any plan to introduce event tagging in iCal ?
iMac   Mac OS X (10.2.x)  

Answer 1

This is what I think it means:
"Depending on whether you want the event type to be deactivated when its listeners have acknowledged receipt of the event, select either Upon Notification or Never."
I think deactivate the event means, it's not available anymore on the queue. You can ensure it doesn't stay on the queue after you catch it (Upon Notification), or you can catch it and then deactivate (or remove it from the queue) manually using your own service.
"For example, you might select Never if a service is handling the notification and any deactivation of the event type."
I think that what they mean here. If you select "Never" then, you catch the event, and you're responsible to deactivate it (remove it from the queue).
Jasmin