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" There are two ways to launch a social networking site. The first way: Build one from scratch, and spend years and millions of dollars going up against established giants. The second: Add a couple of key features that turn an already ubiquitous service into a social networking site. With Tuesday&amp;#039;s launch of Google Buzz, the search giant has picked the latter path.     Google Buzz, which serves as a sort of watered down version of the cool-but-pretty-useless Google Wave service, fills Gmail with social networking features such as friends lists and status updates. Here are five things you need to know about the new Google Buzz service:  1. The program won&amp;#039;t be a dedicated new site. Instead, Buzz is built right into Gmail. This means that if you use Gmail you&amp;#039;ll automatically become a Google Buzz user without needing to bookmark a new URL (as is the case with Google&amp;#039;s Wave, or its little-known social network, Orkut). 2. Unlike previous Google launches, such as Google Voice and Google Wave, you won&amp;#039;t need to solicit friends for invitations. Google will be rolling out Buzz to all Gmail accounts over the next few days.  3. When Buzz finally hits your account (it will show up in the sidebar under your `Inbox&amp;#039; link) the people you most commonly email and Gchat will automatically populate your friends list, allowing you to share status updates, photos, videos and links with them. You will have the choice of sharing your posts with the wider public or made private to share only with friends.  4. Buzz will also connect with your Picasa, Flickr, Google Reader and Twitter accounts to network your content from those sites. In the first version you won&amp;#039;t be able to use Buzz to write Twitter updates, just read them.  5. The mobile version of Buzz includes geotagging, which allows you to tell people where you&amp;#039;re buzzing from, and look at public buzzes posted by people around you. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/culture/web/how-to/a5331/4345384/>