Google today launched a new service known as buzz. Buzz integrates your Facebook and Twitter profile all under your Gmail account.
Buzz was announced at an event at the Google HQ in Mountain View , California. With Google Buzz, all your social interactions and updates can come to one place, right next to your Inbox.

The key elements are:

1. Automatic friends lists (friends are added automatically who you have emailed on Gmail)

2. “Rich fast sharing” combines sources like Picasa and Twitter into a single feed, and it includes full-sized photo browsing

3. Public and private sharing (swap between family and friends)

4. Inbox integration (instead of emailing you with updates, like Facebook might, Buzz features emails that update dynamically with all Buzz thread content)

5. “Recommended Buzz” puts friend-of-friend content into your stream, even if you’re not acquainted.
Recommendations learn over time with your feedback.

Buzz integrates perfectly with your mobile device specially iPhone and android powered ones. It is available as a webapp but can be added to the homescreen and be used as a standalone app too

To start using buzz go to http://www.google.com/buzz