FAQ Question #82

You may leave a community by going to the Community Info page of the community you want to leave and clicking on the "leave the community" link at the top of the page. You will be asked to confirm that you want to be removed from the community. You will also be given the option to remove the community from your friends list. You can leave the box checked to remove the community or uncheck it to leave it on your friends list. If you change your mind later, you can add or remove the community at any time by modifying your friends list.

If the community you would like to leave has been deleted or suspended and you can't view the Community Info page, you can go to the Admin Console and execute the following command:

          community <community> remove <user>

Do not enter the < or > symbols; these are only for reference purposes. Replace <community> and <user> with the username of the community and your username, respectively.

Note that leaving a community using the console method will not remove it from your Friends list.


FURTHER READING

Community Info page
http://www.livejournal.com/userinfo.bml?user=communityname, replacing "communityname" with the username of the community

Admin Console
http://www.livejournal.com/admin/console/

What is LiveJournal's Friends system? How do I use it?
http://www.livejournal.com/support/faqbrowse.bml?faqid=61