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Fri 10 May, 2013 04:24 am
I'm monitoring a sponsored story for a fansite. with the same target group settings the cost per fan first went down (to about 35 cents) and then after a week the cost per fan suddenly explodes (1 euro now!):
Any advice, insights, revelations about this topic?
@Dahomey,
Yes, they upgraded their fans. They went from:
to this: