Spatial Navigation was first introduced in Opera's iTV business unit. With Opera for iTV on their set-top boxes, TV viewers appreciates how simple it is to use the arrows keys on their remote controls to navigate the electronic program guides or between links in Web pages. Now Opera is bringing the same concept to everyone's desktop computer. By combining the SHIFT and arrow keys on the keyboard, users can easily move to links or any other navigational element on a page.
It really is a very effective means of navigating links.
Opera 7.11 also has quite a bit of support for CSS3
Shrewd move in supporting a number of MSIE propriety features. A number of these, particularly innerHtml and custom/colored scrollbars, were contention areas that held back a number of IE users from making the switch.