Said FAQ currently reads:
How are custom friends groups used?
You can create up to 30 custom friends groups. They're useful in controlling which of your friends can see a journal entry (http://www.livejournal.com/support/faqbrowse.bml?faqid=24), or which of your friends' journal entries appear on a filtered friends page (http://www.livejournal.com/friends/filter.bml).
For details on how to make an entry with a custom friends group security setting, see http://www.livejournal.com/support/faqbrowse.bml?faqid=24.
If you want to create a custom "default view" for your friends page, create a friends group called "Default View". You can add any friends that you want to it, and this will allow you to view only those specific friends when you go to your default friends page (http://www.livejournal.com/users/exampleusername/friends/, replacing "exampleusername" with your username). This is particularly useful if you don't want to view specific friends when you go to your default friends page.
You can also view a specific group by itself. First, create a group (for example, "group1"), and then go to http://www.livejournal.com/users/exampleusername/friends/group1/, replacing "exampleusername" with your username. Friends group names are not case-sensitive. Alternatively, you can view your groups by checking the appropriate boxes on the Friends Filter page (http://www.livejournal.com/friends/filter.bml).
Both of these features will only work for you, and only if you are logged in, unless you specifically mark your group(s) as "public". If they are marked as "private" (the default setting), anyone else who goes to any of your group pages will see all of your friends.
If you create your custom groups from http://www.livejournal.com/friends/editgroups.bml but use the option on one of the downloadable clients (http://www.livejournal.com/download/) to view them, you may need to close your client and open it again in order for it to list your newly created custom groups.
*
USING THE WEB INTERFACE:
Go to the Edit Friend Groups page (http://www.livejournal.com/friends/editgroups.bml). If you don't remember the address of that page, an easy way to get there is to click the 3 dots after "Friends" on the blue sidebar; then you'll see a link at the bottom of the page saying "If you want to edit your friends groups, go here."
*
USING A DOWNLOADED CLIENT:
Many clients available for download include the ability to edit or create custom friends groups. For more information on your preferred client, consult its documentation or its menu options. See http://www.livejournal.com/support/faqbrowse.bml?faqid=158 for information on downloading a client.
*
SECURITY NOTES:
If you want to delete a group and make a new group, do NOT simply rename one group to something else and change the people that are in the group. If you do, all the people in the new group can see all your old entries you made for people in the old group.
If you delete a custom group, any entries made to that group will still have the "custom" security set, but it won't be set to any particular group. The effect of this is that no one but you has permissions to view these entries; even though they are not marked private, they are effectively private. Additionally, if you recreate the group with the same name, the entries will not automatically be set to that group again. If you would like to change the security level of the entry or set it to a new custom group, you'll have to go back and edit the entry (http://www.livejournal.com/support/faqbrowse.bml?faqid=2).
I would suggest to modify it, so that it reads:
What are custom friends groups? How do I use them?
A custom friends group is simply a named sub-group of your friends-list. You can create or edit custom friends groups at http://www.livejournal.com/friends/editgroups.bml. Alternatively, if you have downloaded a LiveJournal client, it may allow you to create or edit your custom friends groups; consult its menus or documentation for details. You can create up to 30 friends groups.
Custom friends groups have two uses:
* When you post an entry, you can choose to allow only certain friends groups to see it. This way, you can post an entry that some but not all of your friends can see. For instructions on how to do this, see http://www.livejournal.com/support/faqbrowse.bml?faqid=24.
* You can view a version of your friends page that only shows entries from a certain friends group. For example, if your username is "exampleusername" and you create a group called "group1", then you can visit http://www.livejournal.com/users/exampleusername/friends/group1 to see only entries from members of "group1". To view multiple groups' entries at once, you can use http://www.livejournal.com/friends/filter.bml.
Further, if you create a custom friends group called "Default View," then you can visit your "regular" friends page (http://www.livejournal.com/users/exampleusername/friends/) to see only entries from members of "Default View". To view all your friends' entries, you can visit http://www.livejournal.com/users/exampleusername/friends/?filter=0, replacing exampleusername with your own user name.
Only you can "filter" your friends page in this way, and then only if you are logged in (http://www.livejournal.com/login.bml). If you'd like people other than yourself to be able to view only entries from "group1", you can mark it "public". You can do this using the web interface (http://www.livejournal.com/friends/editgroups.bml); not all clients allow you to mark groups as public. Then anyone visiting http://www.livejournal.com/users/exampleusername/friends/group1 will only see entries from group1. If you create a group named "Default View" and mark it public, then anyone visiting http://www.livejournal.com/users/exampleusername/friends/ will only see entries from "Default View".
SECURITY NOTES:
* If you want to delete a group and make a new group, do NOT simply rename one group to something else and change the people that are in the group. If you do, all the people in the new group will be able to see all your old entries you made for people in the old group.
* If you delete a friends group, any entries made to that group will still have the security set to "custom," but not to any particular group. The effect of this is that no one but you will be able to view these entries; even though they will not be marked private, they will effectively be private. Additionally, if you recreate the group with the same name, the entries will not automatically be set to that group again. If you would like to change the security level of the entry or set it to a new custom group, you'll have to go back and edit the entry (http://www.livejournal.com/support/faqbrowse.bml?faqid=2).
What do you all think? Is the current FAQ confusing? Is mine any better? (Not being confusing isn't exactly my strong suit.) Do you have any suggestions? Etc.