RSS feeds can be automatically posted through your twitter account. Twitter's API allows for this though third-party sites such as yotwits and twitterfeed. All you have to do is get the RSS feed URL and enter it into these services along with your twitter account details. There are also certain predefined news feeds available that the web site will suggest. These will be divided according to category, such as, say Tech news. If you put this feed into your twitter stream, it will automatically tweet the latest tech news from your account at predefined intervals. One of the best uses of this is to put your last.fm tracks feed into your twitter account. So any new track you play is automatically twitted: Yotwits does not need registration while twitter feed does.