I am using the Drupal for Facebook module on both a D6 and D7 site to post to a FB page (not a group or a personal account/wall) via streams.
It is working fine except I would like the 'Post to Facebook' checkbox be automatically checked only when the node is created, but not on subsequent edits. My users won't check this box on their own (and I may not even want them to see it).
I've tried using Rules, but there seems to be no FB posting action there.
I'm assuming it can be done via hook_form_alter, but have had no luck with that. The Element ID for the checkbox is... fb_stream[fb_stream_do_post]