Wikipedia mobile app Whisper http://en.wikipedia.org/wiki/Whisper_%28app%29 Whisper Whisper Whisper Whisper Whisper https://en.wikipedia.org/wiki/Whisper_(app) Whisper Whisper Whisper Whisper Whispr Whisper view article Whisper over 30 million active users Whisper was created in 2012 Whisper Whisper