Friday Archive Dive: Facebook's Edgerank system

Today's Archive Dive comes from June 12, 2012, when we discussed why some of your Facebook friends aren't seeing all of your posts.
Earlier this month, you've seen something new on your Facebook Fan page, if you're the administrator of that page.
Right there at the bottom: 93 people reached / 21%
In other words, only 21% of the people who have subscribed to my Facebook Fan Page actually received that post.
