"You may have some posts you want to share with a wide audience, such as whom you voted for or how great the weather is today," Olaoluwa Okelola, a Facebook engineer, said in a blog post. "Other times, you may have more personal updates like your new phone number or an invitation to join you at your favorite restaurant for dinner that are meant for only close or nearby friends."

Okelola noted that the updated tool will ask users "Who do you want to tell?" after each response they make to "What's on your mind?" The answer will determine which Facebook friends get to see a user's posts, pictures and video.

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