From the Washington Post:
Lawyers, lobbyists, librarians and concerned citizens, rejoice: As of Monday, it is much easier to access the Federal Register. The de facto daily newspaper of the executive branch publishes approximately 80,000 pages of documents each year, including presidential disaster declarations, Medicare reimbursement rates, and thousands of agency rulings on policies ranging from banking to fishing to food. It’s a must-read for anyone with business before the federal government or concerned about inside-the-Beltway decisions, including academics, good-government advocates and Register junkies (yes, they do exist).
Starting Monday, issues dating back to 2000 will be available at Data.gov [also GPO's Federal Digital System and The Federal Register Web site] in a form known in the Web world as XML, which allows users to transport data from a Web site and store it, reorganize it or customize it elsewhere. Officials suggested that the move puts readers, rather than the government, in charge of deciding how to access the Register’s reams of information.
Read the White House announcement.
Post from the Sunlight Foundation on why this is so important.