I'm currently looking into what seems to be a Facebook bug (oh what a surprise!) which means that images in posts made to group walls just vanish as if they weren't even in the post.
(Sat Apr 12, 5:48 pm).
Recommend on Google
Login with Facebook (Click on the Blue Button)
If you've found Wordbooker useful then please feel free to donate to its support and future development. Please provide your FB Id number and your website when making payment so your details can be added to the 'thanks' list in the plugin