General Motors says it will stop advertising on Facebook The decision by GM, the third-largest advertiser in the United States, marks the first highly visible crack in Facebook's strategy and underscores doubts about whether advertising on Facebook works better than traditional media. Facebook, founded eight years ago by Mark Zuckerberg in a Harvard dorm room, is expected to start trading on the Nasdaq on Friday. GM said it will still have Facebook pages, which cost nothing to create and for which it pays no fees, to market its vehicles and added that it is not unusual for it to move spending around various media outlets. "In terms of Facebook specifically, while we currently do not plan to continue with advertising, we remain committed to an aggressive content strategy through all of our products and brands, as it continues to be a very effective tool for engaging with our customers," GM said. Facebook declined to comment on GM's move.