Automatically crossposts your WP entries to your LiveJournal or LJ-based clone.
It crosspost fine in simple case - create new post and publish.
But if you want to update post, be careful.
When you update post in WordPress, it appears in LJ RSS at top again.
Even if you disable to crosspost current post, it still visible on the top of LJ RSS after editing and saving in WP.
It looks the only option is to disable plugin at all in such cases