This script was written a number of years ago and may
not work with the current incarnation of LiveJournal.
Live Journal Security Filter
When you realize that the internet
will live longer than any fleeting thoughts and that public internet
journals are not a hot idea, this script will
allow you to make all your entries private.
Be warned, if your entries are not UTF-8 compliant, this script will delete
them. I may fix this later.