faq 132 says
Many LiveJournal system pages can be viewed in another language by adding ?uselang=XX to the end of the URL for the page, where XX is the standard code for the language you wish to view (e.g. http://www.livejournal.com/editinfo.bml?uselang=en_LJ). For example, you can specify English by adding ?uselang=en_LJ. If a LiveJournal system page already has a ? in its URL, then add &uselang=XX instead (e.g. http://www.livejournal.com/userinfo.bml?user=exampleusername&uselang=en_LJ),
but this is rather confusing since en_LJ isn't a standard code (and the user might assume that fr_LJ would be French), and there isn't a list of language codes. additionally the trailing comma should be a full stop. i suggest it be rewritten thus:
Many LiveJournal system pages can be viewed in another language by adding ?uselang=<i>XX</i> to the end of the URL for the page, where <i>XX</i> is the standard code for the language you wish to view. For example, you can specify German by adding ?uselang=de. If a LiveJournal system page already has a ? in its URL, then add &uselang=XX instead (e.g. http://www.livejournal.com/userinfo.bml?user=exampleusername&uselang=de).
→ <i><a href="http://www.livejournal.com/translate/">View list of language codes</a></i>.