For those of you who dislike the new facebook/twitter crossposting option, I am posting a link to delaese 's instructions on how to code them out. She also includes options on how to disable the pingback bot to give you the maximum privacy a global public website can provide.
ETA: I've just found out that LJ will be removing the crossposting option (yay!) because of widespread ick. It may take a month, might be sooner. I'm looking forward to it.