LJ-Sec is a bulk journal entry management tool. It allows you to bulk change post security, delete posts, find and replace items, repost journal entries to other LJ-compatible servers, and other assorted odds and ends.
This version adds some advanced options that allow you to add / delete / edit the metadata stored in Livejournal entries directly. This also adds a delay that you can set between each Livejournal call, which may be necessary if you are getting "too many requests" type errors.
Find the download for LJ-Sec at
http://www.mp3vcr.com/ljsec/.