I only upload the f-locked one's to LJ (though you can set up WP to have private entries. I haven't bothered to do that though since there aren't any registered readers on the wp site). Right now, I'm using the email updates for both wp and lj. I've set up a template for them in my email program. None of the desktop bloggers handle the different platforms properly, so I gave up on them. It isn't a perfect solution, but it's the best I've got for now.