The #Font-Face Rule and Useful Web Font Tricks - Smashing Magazine
►http://www.smashingmagazine.com/2011/03/02/the-font-face-rule-revisited-and-useful-tricks
Most browsers won’t show any text before all Web fonts are imported. Firefox, however, displays the text using a system font and renders the text again, when the embedded Web fonts are completely loaded. This technique results in a “flash of unstyled text” that sometimes leads to side-effects. Web designers can control this behaviour by using #Google’s Webfont Loader.