Apparently, LJ is at it again.
If you use the navigation bar on your LJ, you may have noticed there is a feature that says "+share" on the top right corner. This allows anyone to share posts you have made - INCLUDING FRIENDS-LOCKED POSTS - from your LJ onto theirs!
You can visit a public entry made by
spud66cat to see a screen cap of what this button looks like, and she's provided a link to send feedback to the LJ staff regarding this issue:
http://www.livejournal.com/contact/?dept=feedback I can't even...
*headdesk*