W3C ARIA is a set of HTML DOM properties that enables adaptive technologies like screenreaders to work better with dynamic web applications. As with previous ARIA-enabled Google solutions, screenreader users can now switch on ARIA support in the following applications: “Google Calendar, Google Finance, and Google News”. By activating an invisible Enable Screenreader Support link. If you do not have a screenreader installed, you can download a Firefox enhancement Fire Vox by Charles Chen. You can obtain additional help by pressing the ? key to hear the available list of shortcuts, announced Google Blog.