WebGCal

This service allows you to add hCalendar events to your Google Calendar.

Currently syncing 13 calendars with 104 websites for 15 users.

It's important that the websites you are going to add contain hCalendar events. You can check this using the Google Calendar or Microformats extensions for Google Chrome or the Operator addon for Mozilla Firefox.

Currently only the following attributes are supported:
summary, description, location, status, dtstart, dtend, duration