[jayknight]

Another approach would be for better support of microfomats like h-event[1]. There is a link on that page to project to convert h-event markup into an ics file, but it isn't a mature solution. But imagine being able to just add a URL to a web page that lists events and your calendar would be able to extract the event information from the html itself.

[1] http://microformats.org/wiki/h-event

[az09mugen]

Because of the inconsistency of the generated html among different site, I think it would be difficult to do. But I love your idea. I think something along the lines of an rss feed generated from an ics file that lists the events to come, or something like that. Something more in the way the subscriber subscribes to the "events feed", rather than being spammed with emails about events to come, for each event. But maybe I'm wrong and this is not sustainable or useful in any way.