Read How we use web fonts responsibly, or, avoiding a @font-face-palm on the Filament Group Lab.

Using @font-face to load custom web fonts is a great feature to give our sites a unique and memorable aesthetic. However, when you use custom fonts on the web using standard techniques, they can slow down page load speed and hamper performance—both real and perceived. Luckily, we've figured out some methods to apply them carefully to ensure your site correctly balances usability, performance and style.