Mac, no biggie, I probably will not be a big user, but you hit one of my pet peeves -- assuming that the fonts render the same way for everyone. I have a laptop with a nice high rez screen (1680x1050). It is so high, that my failing vision needs bigger fonts than normal. But I can still appreciate the great clarity of the nice high-rez pictures, so I dont want to reduce the screen resolution. Instead, in the video card properties/advanced settings, I set the DPI to 120. What I see on your page, is
I can work through it, and it is sort of a personal problem, I am the minority, so dont go to any bother, I am just using your page as an excuse to remind CSS programmers everywhere, that one of these days, they are going to have to cleanup their code, because as resolutions get higher, and the population ages, there are going to be more of us.... a lot more.
Even the excelent Keyhole programmers forget about us now and then. (One of these days I have to learn enough programming/page coding to work through how to fix this...)