Since we have this about IE7 rapidly turning into a discussion about how to tweak firefox and which extensions to use, I thought there should be a thread for out favorite firefox extensions. Probably best to say if it doesn't work with FF 2.0.

Here are a few of mine:

NoScript: perfect for what it does, basically. You can allow, remove etc. scripts that appear on your webpage, it's extremely easy to use, and it works.

Adblock: it blocks ads. I like it

IE tab: stops me from having to use IE at all. Love it.

Tab Mix Plus: This allows you to customise what happens with tabs in all ways that I can imagine. The session manager is excellent too. Before FF 2.0 it was even more neccesary, but you could probably live without it now. It now works for 2.0 (for a while it didn't).

Download Statusbar: instead of having to look at another window to see how your downloads are doing, this puts little statusbars for each download at the bottom of the browser. Wonderful.

Google toolbar: I don't know how I'd browse without it. Saves you a lot of typing. Since when I first got Firefox it came with the google toolbar, I don't know whether this helps anyone.

Mouse gestures: lets you assign mouse movements to certain tasks, kist opening a new window/tab, reload, back & forward, pretty much anything. You specify which button you want to hold down to allow the mouse gesture, so you won't make any accidental gestures. I love it.

Adblock Filterset G Updater: Sounds like what it does. It periodically connects to a server and updates your Adblock filters from a centralized server.

Customize Google: Does everything from blocking google adds to getting rid of the spam counter in your g-mail account. Best of all, it can block the google tracking cookies.

DownThemAll!: A very nice download accelerator that is nicely integrated with FireFox.

Foxy Tunes: Sink it with almost any music player and control your playback without ever having to leave the browser.

Gmail Space: Similar to Google drive, use a G-mail account as a FTP server.

DisableBackspaceNavigation: This turns off the, well backspace navigation in FireFox. Good for fatties who can't hit keys around backspace without bumping it.

I use a lot of extensions
Google Notebook - Allows notetaking while browsing
Reliby - Reloads all Live Bookmarks
ReloadEvery - Reloads webpages every so many seconds or minutes
StumbleUpon - browse the internet through interests
WebDeveloper - Adds a lot of Web Developer tools
ChromEdit Plus - A user Profile Editer
Download Statusbar - downloads are now on a bar instead of a new window
ExtendedStatusbar - Statusbar shows speed, percentage, time, and loaded size (like opera)
FoxClocks - shows the current time in the statusbar (usefull because I autohide my windows toolbar)
Gmail Manager - Keeps track of gmail accounts

also, I use this in my userchrome.css to give me lots of screen space

http://img.photobucket.com/albums/v399/Bakudai/firefoxss.jpg

To look something up on google, I still use Ctrl+T, Ctrl+K, so no more need for the little box up there.

Yeah, it does - you just have to rename the files, with the .flv extension. There's a few Flash Video players out there - I recommend you just pick up mplayer - it's free, and plays damn near everything you need it to.

MinimiseToTray is a handy little extension - moreso for Thunderbird than Firefox, admittedly, but it's worth a look if you're that type of person. You know. The type that likes a lot of icons in the system tray.

*bump*

Anyone know of an extension that will let me use Firefox when opening hotmail from MSN?

Firefox 3 has (slight variations of) both those features built in (you can right click the tab bar and select "Undo close tab"), but the addon you're thinking of is Tab Mix Plus.

Actually, I managed to find the one I was looking for. It's called Session Manager and it's simple as to use.

There's an add-on that will give you three columns. It's still in development, though.

https://addons.mozilla.org/en-US/firefox/addon/9260

Is there an add-on that will stop a page from automatically refreshing every few minutes?

I added a few from Remington's post and was most happy with adblock plus, so on that vein, are there addons that you would say to someone: "You're an idiot for not having this."
I'm just looking for things that speed up and simplify browsing, I can find the general "appearance/this is cool" ones.
I know this comes across as lazy, but it took me this long to get adblock plus so input is appreciated.