Poke, New Facebook App that lets you control of the messages, videos you send to your friends

Like Snapchat which lets private images to disappear after a specific time, Facebook has released Poke an iPhone app that aims ‘’to make it fun and easy to say hello to friends wherever you are.’’ Facebook tells us. In addition we learn that the poke feature has been a part of Facebook since 2004. 

In fact the success of Snapchat seems having forested its release.
Henceforth with the Poke app, you can poke or send a message, photo, or video to Facebook friends to share what you're up to in a lightweight way. You can poke an individual friend or several at once. Each message expires after a specific time you've set, either 1, 3, 5 or 10 seconds. 

When time runs out, the message disappears from the app.
To see a message from a friend, press and hold the message until it expires. If you ever see something you’re uncomfortable with, you can click the gear menu and report it.