This is probably due at least in part to the Mac's text rendering, which is considerably thicker than Windows. It's pretty common to find text that is ridiculou

This is probably due at least in part to the Mac's text rendering, which is considerably thicker than Windows. It's pretty common to find text that is ridiculously thin, mostly on designer's websites. I'm no devotee of Windows or Mac (though I don't own a Mac yet), but it seems pretty clear that the design crowd needs to start at least spinning up a simple Windows (or even Linux - Ubuntu's text rendering is in between OS X's and Windows') VM and make sure that their text is readable on the platforms that nearly everyone uses. Even Android and (I believe, though I wouldn't be surprised if I was wrong) iOS don't render text as thickly as OS X. Failing to optimize for different text renderings and making your text extremely thin alienates both the mobile market and 95% of the PC market. Also, Chrome has terrible, evil, nasty text rendering in general, at least on Windows. I prefer it to IE10, but the web does look much better in IE, which actually has decent text rendering.