I changed this site to use
font-size: 70% from
font-size: 11px so you could resize the fonts on this site using your browser. This is a workaround for what Zeldman describes today.
All modern browsers now offer Text Zoom or Page Zoom but one: IE/Win. Which is, of course, the most-used browser on earth. The IE/Windows team has done great things, but implementing Text Zoom is not one of them.
To me, changing your css to use a percentage value rather than a pixel value (i.e. 12px -> 80%) seems like a pretty easy workaround.