Facebook Groups To Show Who Saw Each Post
 

The Facebook creepy factor has just bumped up another notch. Starting today when you visit a group, you can view who's seen each post. This way you can stay updated on the group's activity. For example, in your soccer group you can post the new practice time and then see who got the update.

http://www.hardocp.com/news/2012/07/...saw_each_post/