Well thanks for the suggestion, but like I said above, I don't want to change my font size on my PC or in my browser. It's fine as it is for all my apps.
I have the Logitech MX Revolution laser mouse with a wheel on the side I have set to zoom in - essentially increasing the font size on websites, and that works fine on most sites. On almost all sites. On pretty much every site...
Every site. Well, every site except for one.  Can you guess which site that might be? ;-)

Oh, btw, CTRL+"+" (plus sign on the numeric keypad) does the same thing in Firefox. Not sure about IE.