No, we don't have the 'pushing' ability for posting your content to your Facebook Wall. While that is possible through Facebook, we haven't implemented it because, simply put, we don't recommend doing it.
When you post an article to Facebook, you get to put your own introduction comment, you get to choose the time it gets posted, and you have a lot more control over 'how' the post looks (picking an image, etc). All those things are huge factors in how many people will see the post and how it's received. If you have a generic article targeted toward every user, simply having that automatically post with the first sentence or two on Facebook loses a lot of context. It's much, much better to have a nice message explaining to your Facebook audience why the new article may be of interest to them.
Open Graph Actions are great for your users to easily (hands-off) promote your site. Your promotions should be much more manicured to your audience and not simply automated.
That's our opinion at least. There are other reasons we haven't implemented it.. mainly, mistakes, like duplicate posts, too early of posts before the content is fully ready, etc.
Hope that explains our position, but we'd love to have your feedback!
Thanks,
Alex