The default setting for posts to this community is 'friends only'. If you wish to read the posts, you will need to join the community (not just 'watch' it).
To request to be added, you may go to the user info page and click on the 'to join community' link at top. Your request will be sent to the maintainer(s). (Simply commenting here will not get you added, because of the way LJ works. You still have to 'join community.')
If the LJ you wish to join the community with is a friends-only locked journal, that is fine.