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Re:GM Says Facebook Ads Don't Work, Pulls $10 Million Account by noodle on Tuesday May 15, 2012 @04:36PM (#3978676)
I think a better question is how GM measures the effectiveness of their campaigns on Facebook. Its not like you can track the conversion rate from ad click to car buy.
Re:GM Says Facebook Ads Don't Work, Pulls $10 Million Account by brd on Tuesday May 15, 2012 @04:45PM (#3978731)
I'd imagine that they're doing a form of A/B testing geographically. All other things equal, its easy enough to only do an ad campaign within a certain radius of a dealership and measure the change in that dealership to others in the state.
Re:GM Says Facebook Ads Don't Work, Pulls $10 Million Account by Wilya on Tuesday May 15, 2012 @04:55PM (#3978781)
You can't track the conversion rate from a TV ad either. That doesn't mean you can't notice a positive/negative effect related to the presence/absence of the ad. Especially at the scale of GM.