Facebook Adds Granularity To Sharing Options
http://www.allfacebook.com/facebook-adds-granularity-to-sharing-options-2011-05?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+allfacebook+%28Facebook+Blog%29

The feature enables users to select between posting items on their wall, on a friend’s wall, in a group, and in a private message

(via Instapaper)