Msg#: 4550427 posted 9:33 am on Mar 5, 2013 (gmt 0)
I think your post is reaching to less user. Facebook reach is completely based on Edgerank Algorithm. It means if your user doesn't take any action to your post then after few days Facebook will stop sending your post to user News Feed. Try to post more creative post which encourage your user to do some action on it it will help to improve your edgerank.