"Facebook users who check in to a store or click the "like" button for a brand may soon find those actions retransmitted on their friends' pages as a "Sponsored Story" paid for by advertisers.
Currently there is no way for users to decline this feature.
Facebook says this lets advertisers promote word-of-mouth recommendations that people already made on the site. They play up things people do on the site that might get lost in the mass of links, photos, status updates and other content users share on the world's largest social network."
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