According to a January 1, 2005 report from GovExec.com, via Be Spacific,
The Office of Management and Budget is working with an interagency project office to launch the new and improved Regulations.gov Web site. For the first time, citizens will be able not only to comment on proposed regulations using the Internet - as they do now on the site - but also will have access to supporting agency documents, every public comment and rules that are already in place.The Regulations.gov website is "the central online rulemaking portal of the United States government." It enables you to search, view, and comment on proposed Federal regulations from approximately 160 Federal Departments and Agencies through a single Web site. Each entry provides a quick link to a comment form so that visitors can type in their comments and submit them to the appropriate Department or Agency. The consolidated site enables visitors to easily move from one regulation to the next. "By providing electronic access to open rulemaking actions, Regulations.gov gives citizens a greater opportunity to provide their views."
Regulations for which comments are due today are listed here.