The feature lets users search for posts they've previously seen from friends and Pages.
Nearly 150,000 tweets appeared a full two days before cable news networks covered it
The move comes with some conditions, however.
Take the struggle out of social with tools that help you plan your posts and juggle multiple accounts.
In the world of support, social media can be a powerful tool. Here's how to successfully incorporate social media into your support strategy.
What's that hashtag mean? You may soon be able to find out.
You'll no longer be able to send messages from Facebook's main mobile app
This app creates a daily time capsule that's all about you.
Somebody better call the burn ward.
It might be nice to know if one of your Facebook friends is nearby, but you don't really want to broadcast your present location to every random stranger with a Facebook app.
The company's Connected app uses a cards interface to deliver updates on people's contacts