I think livejournal is now no-follow. So from technical point of view it has no value for google as bot won't count it as a backlink. But it is unnatural when all of your backlinks are coming from do-follow websites. So, livejournal is no more as affective as it used to be when it was do-follow. But this is worth to try as it has a PR of 8 and the number of traffic it gets.
You can help the HubPages community highlight top quality content by ranking this answer up or down.