> Looking at the last month's Google Analytics Which means you're ignoring the people that either block GA specifically or don't run javascript. > how could y

> Looking at the last month's Google Analytics Which means you're ignoring the people that either block GA specifically or don't run javascript. > how could you even possibly keep track of what system fonts they all have available? You don't. That's why you design for em/ex/rem units, or use designs that don't care. > are actually of better quality than most system fonts as well That's personal opinion. > but you get the same font everywhere No, you don't. For example, I have a long list of entries like this in my ~/.fonts.conf <match target="pattern" > <test name="family" qual="any"> <string>Helvetica Neue</string> </test> <edit name="family" mode="assign_replace"> <string>Ubuntu</string> </edit> </match> You also don't know if the CSS or webfont actually loaded - you shouldn't ignore network errors.