I've checked a few of my links to individual documents, topic search, and RSS feeds and they all worked, but you might want to verify your own.  Sometimes site re-designs can make links break badly.  They do have short and long versions of RSS feeds and they are available in RSS and ATOM format.  That is very nice! Thanks GAO!

GAO Launches Web Site Improvements To Enhance Visibility, Impact

WASHINGTON (August 20, 2007) -- The Government Accountability Office (GAO) today unveiled its newly redesigned Web site, www.gao.gov. The updated site makes the agency’s work easier to find, and it better explains what GAO is and what it does. New features on the homepage include a prominent dynamic display of GAO’s latest products, a streamlined “In the Spotlight” section, and a new “Key References” section with links for site visitors....

GAO anticipates further improvements to the site based on comments from its users and evolving technology tools. Furthermore, GAO products, including reports and testimonies, will continue to be posted daily, usually by early afternoon of the day they are released.