Calendar events are pulled from an information source, such as a website, having listed events. A user subscribes to an information source where information containing time-stamped events appears. Alternatively, a user specifies a keyword for searching on the information source. If there are any changes on the information source in regard to a user-specified keyword, the event is automatically linked to the user's calendar. In yet another aspect, a publisher of the information source uses a tag set to tag running text on their information source, e.g. website, such that there is no need for the publisher of an information source to maintain a calendar of the events described in the information source. In yet another aspect, the publisher of the information source is not informed of who subscribes to the information source or what keywords the users specify in regard to the information source to provide user anonymity.