Feedly is a news aggregator application for various Web browsers and mobile devices running iOS and Android. It compiles news feeds from a variety of online sources for the user to customize and share with others. First Released by DevHD in 2008, Feedly has had mostly positive reviews. Wikipedia

For more information about Ubuntu Unity Web apps see this: http://developer.ubuntu.com/resources/technologies/webapps/

Remember, this only work in Ubuntu with Firefox or Chromium. Webapps doesn't work with Google Chrome or Opera yet.