I think they fixed LJ.

The logic of displaying the Facebook/Twitter crosspost boxes has changed:
- The ability to crosspost comments that are protected (on a protected post or a screened comment) has been disabled for non-cyrillic users (cyrillic-services accounts still have the option)
- If you haven't connected a Twitter or Facebook account, the option to crosspost won't show on comments
- The option to crosspost/repost won't appear when one edits a comment
- When crossposting/reposting an entry or comment you can now select what thumbnail photo to repost as well by clicking "Choose a pic"