Full-Size

If you want to make Firefox full size, hit F11. Though, if you have Windows, you wont't see the start bar, and won't be able to switch to other programs. I don't know about Macs (but if someone does know, please leave a comment). You also won't see the task bar in Fireox.

New Google Toolbar

There is a new Google toolbar out there for Firefox users. I haven't tried it out yet, since I'm using Firefox 1.5 (because it's in beta, and can't have the extensions running on it). You can go here to find out what new things are on the toolbar. There's word translator and spell check, and much more! Of course, you get the usual page rank, search box, and auto fill. So if you want to download the Google Toolbar for Firefox, you can click here.