An excellent  replacement for the -9999px text-indent hack for hiding unwanted tekst in your buttons and stuff.

.hide-text {
text-indent: 100%;
white-space: nowrap;
overflow: hidden;
}

• Really long strings of text will never flow into the container because they always flow away from the container.
• Performance is dramatically improved because a 9999px box is not drawn. Noticeably so in animations on the iPad 1.

Replacing the -9999px hack (new image replacement)