Google Buzz allows you to update your status, share photos, videos, and more. Like Twitter and Facebook, Google Buzz will let Gmail users share what they are thinking or doing with the rest of the world or with a select group of people.
Google Buzz for mobile allows you to see what’s going on around you, post messages tagged with your location, and keep up with your friends on the go.
Would you abandon Facebook and Twitter?
I don’t think celebrities would abandon Twitter anytime soon.
See Privacy Flaws in Google Buzz.
You can check my profile here Google Buzz

