This is in our task list of things to do. It hasn't been one of the larger requested features, though it's becoming more popular. The reasons it hasn't been done so far are:
* Difficulty in making it simple - We need to make sure that the right article is easily posted to the wall, but not before it's finished (published), not duplicated (if you publish/unpublish) and a couple of other common mistakes that we've heard of with some of the other extensions that do post to wall. When we add features, simplicity and power are required so that it doesn't cause more problems than it's worth.
* While not automated, it's pretty easy to post now. With the Open Graph features of JFBConnect, you can fully describe the page's title, description and image. Then, you can post it to your wall with a better (Facebook targeted) intro and explanation for your users. This is, honestly, the best way as posts that have a personal intro (and not just the first line of the article) will better engage your Facebook audience while still letting them see the Open Graph information about the article.
Obviously, there are some that want it all automated, and JFBConnect will get there. Until then though, there's the extra step of creating the post on your Wall and linking to the article.
Initially, when we do it, it will be Facebook only.. so if other networks are required, we'd recommend one of the other services for now. We do plan more Twitter, LinkedIn and Google+ integration for our extensions, but don't want you to think anything is imminent.
Hope that helps explain,
Alex
Post articles and K2 items to facebook wall
