I'm really trying to switch over to using Firefox as my default browser. But it's the little things that keep me from going over. For instance, my hands hardly ever leave the keyboard. And I love being able to do web searches in Safari using the hotkey, Command-Option-F. I realize that it's possible to put the focus in the upper-right web search field using Command-K in Firefox, but it's sometimes difficult to remap my brain.
If you want to change your hotkeys, consider using Dorando's keyconfig extension -- here's some more info on the extension. Be sure to read the first post (by Dorando) in that link very carefully, and consider clicking on the 'Example custom keys' link as well -- it's right above the Changes: section of the first post. It's an awesome wealth of possible keys.
For example, I added a new key called 'Next tab,' and pasted in this code:
gBrowser.mTabContainer.advanceSelectedTab(1);
I then assigned the Command-Shift-Right Arrow hotkey to it. Then, of course, I added a 'Previous Tab' key by changing the 1 to a -1, and assigned it to Command-Shift-Left Arrow. Hope this is helpful for all your Firefox key mapping needs! BTW, I am grateful to the Firefox user community for providing such excellent online support and even live support via IRC.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20060112112609860