Both TechCrunch and Mashable are reporting on the Google Buzz launch live from on location. Check out their posts on the new Google product in the Related Links.
Of course, you can go straight to Google's own demo video at google/buzz (direct link in the Related Links section).
Google Buzz was created in 2010.
Google Buzz ended in 2011.
Yes, Google buzz is discontinued on November 24th, 2011.
Well, what happened is another company bought Google and they put down Google buzz and started Google+.
It is probably because they have created Google+. It is like Google Buzz but better and like Facebook but for Google.
Google Buzz is free. All you need to do is to create a Google account.
Yes, it is. Google Buzz is all about sharing the favourites within the group and recommending these for the public. Google Buzz Icon, if pressed, is followed by your gmail account. Google buzz icon can be integrated through downloading API from Google's Webmaster Tool. Yahoo has also buzz.
You can't anymore because Google discontinued Google Buzz in Oct 2011.
It is ultimatly because Google violated privacy regulations. This lead to a lawsuit and Google has decided to shut down Google Buzz.
Yes, Google Buzz automatically geotags buzzes. They also geotag pictures posted from Google Mobile Maps.