Google Buzz caught my eyes in whole day, finally I tried it for a minute after I homed......

I saw people saying, "Google Buzz look likes Twitter."

I feels that, "Google Buzz also look likes FriendFeed on Gmail."

Google Buzz provides a friend's timeline as twitter, it shows latest messages input by Buzzers you followed. You have a personal buzz page to display your public message. Google Buzz also let you to follow other Buzzers and be followed by them.

Difference between Google Buzz and Twitter:

1. Not limited to 140 characters in each message;
2. Other social networks can be connected to Buzz, to let Buzz to display your messages posted on other social networks.

Each Buzz messages can be replied as comments by Buzzers, additionally to 2nd point in the above, I feel Buzz look likes FriendFeed.

Google Buzz also provided a Plurk feature, to display private messages to a group of selected friends.

It is very simple to get a Buzz account, you need a Gmail account only. No further setup is required, buzzers on your gmail contact are automatically followed by you.

Offical Google Blog: Introducing Google Buzz