LucyDuke
staring at the clock
You need to install the Greasemonkey extension, then save the script to a .js file and open it with Firefox. A prompt should appear, offering you to install it.
Hm... no prompt is appearing for me.

You need to install the Greasemonkey extension, then save the script to a .js file and open it with Firefox. A prompt should appear, offering you to install it.
on the thread list there should appear a 'Ignore' on the right side of every thread...That seems to have installed it, but am I supposed to be seeing anything change? I see no way to add anything to the filter list.
//############## EDIT THE VARIABLE BELLOW ##############
//To match your preferences. It is the filter rule for the script.
//Any regular expression should work.
var filterregex = "[Pp]alin|[Oo]bama|[Mm]c[Cc]ain|[Gg]affe";
Hmm, then try the following:
In Firefox click Tools -> Greasemonkey -> New User Script
A dialog will appear:
Name: CFCfilter (or whatever you wish to call it)
Namespace: CFC (or whatever. Doesn't matter)
Description: Improved ignore funtion (or whatever. Doesn't matter)
Includes: http://forums.civfanatics.com/* (Replace the url that is in the box by default. This does matter...)
Excludes: Leave blank
Click OK
An editor window should open. Select everything and replace it with the script. Then save.
That's it!
Could not launch editor.
[Exception... "Component returned failure code: 0x80520003 (NS_ERROR_FILE_EXECUTION_FAILED) [nsIProcess.run]" nsresult: "0x80520003 (NS_ERROR_FILE_EXECUTION_FAILED)" location: "JS frame :: chrome://greasemonkey/content/utils.js :: launchApplicationWithDoc :: line 188" data: no]
I think you haven't had greasemonkey set up with a editor first. so the first dialog asked you for your editor of choice not for the script:i get this error:
i do exactly everything you say, but i still get that error.
The mistake of SkyPing was, I presume, that s/he selected "New User
Script" from the GM menu, instead of directly clicking on a link to a
xxxx.user.js file (a user script).
The entry "New User Script" is for *writing* a user script from
scratch, not for *installing* scripts. The first time you select
"New User Script" after installing GM, it opens an "Open file" dialog
which is actually intended for selecting the executable file of your
editor of choice, for example notepad.exe, gvim.exe, etc. A common
mistake is to download a user script file, click afterwards on "New
User Script", and select the just downloaded file. This effectively
sets the xxxx.user.js file as the executable for the editor, which is
clearly wrong.
If you went through this path, you will have to reset the editor.
Write "about:config" in the address bar of Firefox, then in the input
field at the top write "greasemonkey.editor", click on the displayed
entry with the right mouse button and select "reset". Restart
Firefox. The next time you select "New User Script" you will be
prompted again to enter the executable file or your editor.
Alternatively, if you already know the full path of it, you can set it
from the about:config page by just double-clicking on the
greasemonkey.editor entry.