Google has rolled out a social networking feature for Gmail users called Google Buzz, but it makes us wonder what we're ever going to use it for.

In the same way Wave did it, Google Buzz is combining a few things we do online into one place: your Gmail inbox. A mash between Google Latitude, Wave, and Friendfeed, Google Buzz lets you stay even more connected online.

The Google Buzz social network, which rolled out this afternoon, gives users the ability to link Picasa, Flickr, Google Reader, and Twitter accounts. You can access your linked social networks, post/get updates to Google Buzz and linked social networks, and peruse your friend's updates. When you get responses to any of your posts on any of your linked social networks or on the Google Buzz network, you'll automatically get an email in your Gmail inbox. In addition, people you email often will automatically get added to your friend list in Google Buzz. 

You can share your Buzz posts publicly or with just a few of your friends, and when your friends comment on one of your posts, the comments appear in your inbox in real-time -- similar to the way Google Wave works. You can also share photos, videos, and links with your friends over Google Buzz. Photos are displayed in a photo browser that users can easily view photos in, videos such as YouTube content is displayed in the message without the need to visit the site, and links can automatically grab the content and images on a site and display it in the post (similar to the way Facebook & URLs in messages work). 

There are some similarities between Google Buzz and Twitter, however, such as sending @ replies. Except, when you send an @ reply in Buzz, the user will automatically be notified in their Gmail inbox. Replying to that message will post a comment on your post that was sent to them. In addition, Buzz will automatically recommend friends to you who discuss similar content. 

Now, when and where can you get Google Buzz? Well, Google is still rolling out the service to Gmail users, so if you're lucky, you might already have a link to it inside of your Gmail inbox. In the meantime, you can watch the introduction video below, and visit the Google Buzz page to find out more information.