I got the plugin to install and my Facebook App for my blog created. I had more difficulty submitting the action. I still don't think it succeeded. I was able to use social publisher to publish a test post to my timeline/wall. But when I wrote a real post, it did not work.
I tried the recommendation box and the recommendation bar and both put data on the screen but not always very useful data. I've taken some screenshots of messages I get when I look at my Facebook App for my blog. I've also documented that it always recommends the exact same things regardless of what content I view.
Finally does the recommendation bar not work with indexes or the home/front page of a blog, just individual blog postings?