The RSS Feed saves the users to search permanently the web sites to check their new contents or to wait information about it. As a feed reader or aggregator known program – instead of the user - is able to check the RSS using websites and provides the user with the updated content. The newer versions of the most modern browsers and mailing systems let you cacth up with you RSS Feed subscriptions from any computer, as well.
So you are not obliged to visit every day pages refreshed only weekly or monthly to check the new contents. If there is, it appears in the feed reader.