Facebook Inc. is putting the brakes on the number of ads that appear within user posts and said that younger teens aren’t using the site as much as they used to, suggesting revenue growth may lose steam.
The shares of the world’s most popular social-networking service retreated following comments by Chief Financial Officer David Ebersman, who said on a conference call that the number of news feed ads won’t rise significantly. The stock had surged as much as 18 percent after Facebook reported third-quarter sales that topped analysts’ estimates as advertisers spent more on promotions targeting smartphone and tablet users.
