Facebook's answer to Snapchat appears in App Store, then disappears
Facebook itself pulled off a Snapchat-like feat on Monday, when it posted Slingshot on the App Store in a few countries, only to pull it shortly thereafter. Before it was pulled, a few people got to take a look at the app. What they found out is that unlike Snapchat, before you get to read a message sent to you by someone, you must send that person a message first. When you are looking at a message, you can hit the "React" button to send an immediate response back to the sender of the original message.
Not a trace of Slingshot remains in the App Store, and Facebook admits to mistakenly putting it up on Monday. The social networking firm said that Slingshot should be coming soon, and by all indications,it looks like most of the work has been done, including the design of Slingshot's icon.