Cameron Moll recently pointed out that HTML5 allows you to use link elements to preload content–either pages or page assets like images. Cameron rightly points out that Firefox is, for the moment, the only browser that supports this feature, but I imagine it’s only a matter of time before some enterprising individual puts together some JavaScript to extend the functionality to other browsers. Image preload scripts, after all, have been around forever.

You can read more about HTML5 pre-fetching here.