The accesskey attribute is a useful feature that allows users to navigate websites via the keyboard instead of a mouse. Unfortunately not knowing what accesskeys are associated with each link makes them of limited value. Revealing Accesskey Info is a short article demonstrating how to use the :before and :after pseudo-elements to selectively display the accesskey assignments to modern web browsers.
Jennifer's note: Also of note relating to this is an article about access keys on A List Apart also by Stuart Robertson – seen thanks to Simon Willison and Nate of Web-Graphics.