I just registered a Facebook app so I could let people post articles to their newsfeed the way gizmodo does it (http://gizmodo.com/5969817/the-hobbit-an-unexpected-masterclass-in-why-48-fps-fails).
However, the post is coming up with permissions as "only me". How do I change this? I've already changed the default permissions in the app to "friends".
Steps to reproduce:
First, Remove your application from your app settings. Link to app settings
Second, Go to the app from your account again and select the Public/Friends of Friends/ Friends button. Then login to the app.
Now go to http://www.senseculture.com/blog/posts/75_adventure-time.php and follow the steps as u mentioned earlier.
The post will come on your news feed and the privacy will be of Friends of Friends/Friends.
If it helped you, consider to accept my answer.