Yahoo has purchased Blink, poaching the top talent behind the messaging app as the company continues to expand its reach within mobility. The team behind Blink posted an update Tuesday which revealed the deal, saying that Blink staff will be joining the tech giant. The mobile application allowed users to send text messages, pictures and audio files that would self-destruct in a similar manner to the popular messaging service Snapchat. Once a message is sent, it can only be viewed for a certain timeframe before content deletes itself.