Granted that it will not necessarily minimize bandwidth usage by loading the page any faster, but nonetheless provides an alternative to having the entire content load on each and every page (even where not needed).

From our last experiment, we have a layout constructed with featured post option and some borrowed styling. Now we will add the cool tabbed interface to the sidebar.

There are many Java options out there that can generate these tabbed interfaces, the more popular ones are DOMtab and Tabber. We will introduce one other simple tab JavaScript at the very end that has recently found its way into WP themes, but for most part, we will focus on DOMtab and Tabber.