Now this is something different. Facebook have launched Poke, a new messaging app which lets you send messages, photos and videos which only appear for up to 10 seconds. So basically your messages self-destruct after 10 seconds.
It was rumoured Facebook were launching this app very recently and it's become true. The app apparently only took 12 days to build, 12 days! That's pretty amazing when you think about it.
You can only message the people in your Facebook friends list and the other person also needs Poke. If they receive a message from you via Poke, they'll be prompted to download the app.