Your Facebook Places check-ins or user recommended published stories, may soon end up as an advertisement on the website via a new ad service launched for premium advertisers called "Sponsored Stories." In short, you would go out somewhere, check-in to that location, and the company of that establishment would decide to promote your status update with the check-in as a Sponsored Story.
The same is true if you saw a page on another website and recommended it to your Facebook friends through their news feed. Your status update would then appear on the right column of the homepage for others to not only see, but to hopefully like your status and like the establishment's or company's Facebook page, as well. And before you ask, no, you can't opt-out of the service.
On the content becoming public, Kent Schoen, product manager for Facebook said, "A sponsored story never goes to anyone who isn't one of your friends" in a video yesterday announcing the new service.
Facebook is predicting that these "word of mouth recommendations" (which the social network giant says isn't regularly seen by users because of the overload of content available) from your own friends will increase brand lift and ad recall, as well as a user's own likeliness to recommend that same story to a friend.
[tags]check-in,social media,social network,social networking,ad service[/tags]