< # [https://addons.mozilla.org/firefox/addon/1951 Fission] -- merge address bar and progress bar
> # [http://forums.mozillazine.org/viewtopic.php?f=48&t=2001965 Status 4 Evar] -- merge address bar and progress bar
< # [https://addons.mozilla.org/en-US/firefox/addon/hide-find-bar/ Hide Finde Bar]
These are the extensions I use sometimes. I linked them here to speed up my next Firefox installation.
How to disable compatibility checks in Firefox 6: “Type about:config in the address bar. Right click anywhere on the new window and select New → Boolean from there. A new box will appear where you need to type
extensions.checkCompatibility.6.0. Set the value to false.”
Here’s how to block content in Firefox with CSS by Workingbath. Basically download two CSS files   to your profile/chrome directory and add two lines to the userChrome.css file in that directory:
@import URL("ad_blocking.css"); @import URL("sites.css");