Get rid of the stupid chat sidebar at facebook.com

fb_dont_show_sidebar.css

.fbChatSidebar {
	display: none !important;
}

/*
Installation instructions:

Opera:
1. Open Preferences, go to Advanced > Content > Style Options > Presentation mode  and check Author mode : My style sheet
2. Go to Facebook,right-click on the page background and click "Edit Site Preferences".
3. At the "Display Tab": Select the downloaded CSS File as "My style sheet" and click OK. Reload the Page and the sidebar should be gone.

Firefox (untested):
1. Open your profile directory.
2. Create a new file called "userContent.css" in the "chrome" subdirectory.
3. Insert the content of this CSS-file and wrap it with ``@-moz-document domain(facebook.com) {`` and ``}``
4. (Re-)start Firefox

Chrome: 
1. Download and install this extension: <https://chrome.google.com/webstore/detail/plcnnpdmhobdfbponjpedobekiogmbco>
2. Click the wrench icon > Tools > Extensions
3. Go to the options of the "personalized web" extension.
4. Add a new rule. Enter ``^http[s]*\://.*facebook\.com.*`` at "Match URLs" and paste the code into the "Add CSS" Box.
5. Click Save

*/

Ok, I'm game. How do I install this to work with my FB page?

Depends on your browser.

Opera:

1. Open Preferences, go to Advanced > Content > Style Options > Presentation mode and check Author mode : My style sheet
2. Go to Facebook,right-click on the page background and click "Edit Site Preferences".
3. At the "Display Tab": Select the downloaded CSS File as "My style sheet" and click OK. Reload the Page and the sidebar should be gone.

Firefox (untested):

1. Open your profile directory.
2. Create a new file called "userContent.css" in the "chrome" subdirectory.
3. Insert the content of this CSS-file and wrap it with @-moz-document domain(facebook.com) { and }
4. (Re-)start Firefox

Chrome:

1. Download and install this extension: https://chrome.google.com/webstore/detail/plcnnpdmhobdfbponjpedobekiogmbco
2. Click the wrench icon > Tools > Extensions
3. Go to the options of the "personalized web" extension.
4. Add a new rule. Enter ^http[s]*\://.*facebook\.com.* at "Match URLs" and paste the code into the "Add CSS" Box.
5. Click Save

I'll add these instructions to the file.