You saw speed dials in Opera 9.5. Those have proved to be really helpful. But the recently released Firefox 3 lacks this functionality. However you can add this cool feature to Firefox 3 with a plug-in named Fast Dial. This extension brings the same functionality to Firefox 3.

But this plug-in needs to be improved as after installing this plug-in, Firefox 3 kept on crashing after every few minutes. Very annoying!

Download Fast Dial for Firefox 3 here.