mack - 11:12 pm on Mar 6, 2013 (gmt 0)
That research is from before facebook went "pay if you want people to view your posts"..
In not sure how this would be factored in. I recently experimented with this feature..
So far, your post has had 2.6x as many views because you promoted it.
For £6 I wouldn’t say it was worth it. Its something people may try once then not use again. It probably has the same effect as a "share".