"Like many others"? Which browser is this? uhh... lynx? links? elinks? Even Internet Explorer 4 should support the little "hidden" trick that they just did, methinks.
Text browsers, screen readers, braille devices, thousands of antiquated browser installations in libraries, educational institutions, developing countries...
There's a reason we use XHTML and CSS to begin with; while my beef is so minor as to be inconsequential, certain design choices strike me as being a bit ironic.