Get ready for ads in your Facebook news feed.
The social media giant announced that "sponsored stories" will begin to show up among your friends' status updates and photos sometime in January.
Sponsored stories are Facebook's most buzzed-about ad product and carry the promise of high rates because they have the built-in endorsement of a friend. They were introduced in January 2011 and currently appear on the right-hand column of Facebook pages, surfacing actions taken by Facebook friends around a brand's content, including likes, posts, check-ins and app shares, all of which would be eligible to appear in a news feed anyway, according to Facebook spokeswoman Annie Ta.
Sponsored stories in the news feed will be the same size as other items appearing in the stream and will be identifiable by a link that reads "Sponsored" below the post. Users who mouse over the link will see the following text: "This was already shared with you. A sponsor paid to feature it here."