Facebook's Slingshot App

Facebook has just launched Slingshot, a new photo and video-sharing app.  It's a bit like Snapchat in that the photos & videos will self-destruct, but the interesting new twist is that to see something you must first send something back, thus guaranteeing engagement.  The clock is ticking to the first brands to try it...

Facebook's had a bit of a rocky ride with some of its mobile initiatives - both 'Home' and 'Paper' have been flops - but this one might just work...

More info here.