Wowhead item links as tooltips

Apparently, it is as easy as adding:

<script src="http://www.wowhead.com/widgets/power.js"></script>

To your page, after which all wowhead links, such as Sunfury Bow of the Phoenix show a tooltip when moused-over.

Now how cool is that? :)
(kudos to wowinsider where I read about this :))