It is well understood that page loading speed in a web browser is limited by the available connection bandwidth.

CSS3 has introduced a property called background-clip that can be used to clip backgrounds to either the border, padding or content box.

A New JavaScript Benchmark From the WebKit Team Here in WebKit-land, we strive for great performance and we love to make things faster.

macenstein.com has an interesting article about a slowdown in other applications when a Safari window with a specific set of pages is loaded in the background.