In May last year General Motors pulled all of its Facebook advertising on the eve of the social network's IPO.

Nearly a year later, GM have backflipped and rejoined the Facebook fold.

Motoring on

Last year GM claimed Facebook ads were ineffective and had little impact on their customers, according to the Wall Street Journal. That decision reportedly cost Facebook US $10 million.

A lot can happen in a year, and this week the car manufacturer announced it will be including Facebook advertising in its “Find New Roads” campaign to promote the Chevrolet Sonic.

Reverse lights

The reason for the change is being linked to the recent firing of former CMO Joel Ewanick, who was a key player in the decision to drop Facebook.

“We've had an ongoing dialogue with GM over the last 12 months and are pleased to have them back as an advertiser on Facebook,” the social network wrote in a statement.

We can think of 10 million reasons why Facebook might feel this way.

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