How to make Unity search use the browser

[vinayg18]

I've been experimenting with different desktop environments to find one that's perfect for me. On GNOME 3, if you type in a search term that isn't associated with an application or a file, GNOME3 opens up the default browser and runs a search query.

How can I get that feature on Unity? [I've decided to stick to Unity because I like the Banshee search integration]

Thanks

ETA: I'm on Ubuntu 11.10, despite what my profile says. I haven't reached 50 posts, so I can't edit it!