Google Buzz is actually slightly more insane on Android phones and iPhone than the desktop: There's a revamped, Buzzier Google homepage; you can post entirely using your voice; and a new version of Google Maps eats Yelp's lunch.

There's three components to mobile: A new mobile Google homepage with automatic geo-location and Buzz integration; a web app for Android phones and iPhone located here with full, incredible speech-to-text powers; and a new version of Google Maps that tightly bundles location with Buzz.
In fact, location is the true killer feature here. While it lacks the gaming component of Foursquare, it's central to the mobile version of Buzz. As another layer in Maps, you can see what people are Buzzing about all around you, and add to the conversation. Also, Google's Places database has been updated to integrate Buzz, which seems to take a chunk out of Yelp.


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