I think this is what you all have been looking for. Got these instructions from a friend and they work beautifully. If only Facebook was a little more intuitive! Follow everything below, except substitute your blog's url for
http://desperatemothers.wordpress.com. You still need the /feed/ part.
here's how I automate pulling content from my blog:
1) in Facebook, click on your name in the upper-right corner of the page (just before settings)
2) click on 'settings' (on the right side of the page under the 'share' button
3) click on 'blog/rss'' and enter the RSS URL from your blog
when you post, the stories will get imported to your wall. It doesn't happen immediately, but fairly soon after you post.