Google has announced a new service in Gmail that's aimed to take on social sites like Facebook and Twitter. Google Buzz allows you to share photos, videos, etc. with the friends you email. It works right in your Gmail inbox and there's no setup.

Google will be rolling out the service over the next couple of days. Until then, check out the video to get a feeling for Buzz.

Gizmodo lists the following Buzz features:

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

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

Public and private sharing (swap between family and friends)

Inbox integration (instead of emailing you with updates, like Facebook might, Buzz features emails that update dynamically with all Buzz thread content, like the photo viewer we mentioned above)

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