CSS3 features are now being supported by more and more browsers everyday. This site gives you a good breakdown of which features are currently implemented for each browser. http://www.findmebyip.com/litmus/
One of the lesser-known jewels of HTML 5 is link prefetching. The idea is to extend the time-honored concept of image preloading to HTML content (and without any messy AJAX code). Here’s how it works: You add a line like this to your page: <link rel=”next” href=”page2.html”> Then the browser automatically downloads page2.html in a [...]