It doesn’t help that Facebook doesn’t appear to be taking the allegations seriously. So far they have only responded that “We’ve not seen evidence of a significant problem. Neither has it been raised by the many advertisers who are enjoying positive results from using Facebook.”
(Source: Search Engine Journal, Facebook Ads: What Are You Really Paying For?)
If true, this story is about to get a lot louder.
I do hope Limited Run posts their data + results to back their claim.