Google made some buzz today, as they released their Google Maps 4 (avaliable in the Android Market) and new Buzz social networking feature. What's interesting is that you can access the Buzz feature within Google Maps, or by pointing you mobile web browser to the buzz.google.com
site. With it, you can post information for places, not just your current GPS location, as well as read Buzz posts by other people and make reply comments. It also integrates with your GMail account with comments also being sent there. For example, you can post a Buzz about a local restaurant "Sal's Italian Restaurant is the best" and then have other people reply, which you can view in GMail, the Buzz site, or in Google Maps. We gave it a try on the Motorola DROID, first by installing the new Google Maps 4, then we were able to see small balloon icons on the map where people have already done Buzz postings. We could easily reply to them, and also create new Buzz posts.
Checkout the video and Buzz site for more information.