Performance is dramatically improved because a 9999px box is not drawn. Noticeably so in animations on the iPad 1.
Sounds legit. Erster Einsatz war erfolgreich.
.hide-text {
text-indent: 100%;
white-space: nowrap;
overflow: hidden;
}
Quelle: Replacing the -9999px hack (new image replacement) – Jeffrey Zeldman Presents The Daily Report