From the release notes: - Whisper has been redesigned to allow you to navigate our library of content more easily. - Categories! Browse over 200 categories to discover Whispers that match every moment and mood of your life. - Related Whispers! Discover Whispers related to every other Whisper. To view whispers related to your own, just post one! - Explore the world through the eyes of other Whisper users! Whisper's new Explore feature gives you the ability to see what people are secretly thinking about anywhere in the world. Search the Whisper map from New York to Delhi to Shanghai to see what people are Whispering about. The "explore the world" addition is most interesting, although I wish I could explore through different ages (e.g. what are high schoolers talking about compared to middle age adults).

Whisper 4.0 (iOS)

The anonymous social network. Now more personalized.

The anonymous social network. Now more personalized.