@bluechip: See my last comment on http://wordpress.org/support/topic/plugin-facebook-error-when-posting-to-authors-timeline?replies=7#post-2915971
I believe this will fix the open graph publishing issue you're seeing.
"Regarding my misgiving about the state of version 1.0, as I said, it might be a case of high expectations: as an official plugin (twice official, since I believe WP put some of their weight behind it as well), I would have expected a very polished and full-featured plugin."
The nature of open source code is that you have no idea what will happen folks start using it on the infinite number of permutations they have running on their web servers. :)
"- The post-as-author (and I suspect all other publish actions) merely submit the URL to the post, without providing specific data (such as a summary taken from the WP summary field, or a specific thumbnail)..."
That's not the case, or sounds like a bug. We use WP stuff here. Please post repro steps.
"- The Facebook login to comment, apparently shuts down the WP commenting system altogether (and do not save them to the DB), meaning that if/when the FB plugin is turned off, all such comments disappear..."
Yeah comments are a work in progress. Please post your thoughts in http://wordpress.org/support/topic/plugin-facebook-comments-suggestions?replies=30
"That and the near-absence of user-feedback throughout the code, such as when an API error occurs (hopefully fixed with this update). I must admit that having to spend a couple hours debugging the problem and waddling through code where exceptions are basically caught and discarded, did not put me in a particularly benevolent mood toward the plugin."
This is fixed in the latest update. Please give it a try.
Keep the feedback coming, thanks.