Last updated: 10 february, 2010 - 14:32 GMT
Google takes on Facebook and Twitter with Buzz social network
Google is still rolling out Buzz to its Gmail users
Google has unveiled its latest social network, known as Buzz.
This will pit Google directly against Facebook which has nearly 400m users.
At the moment Buzz is only available to people who have a Gmail account, of which there are an estimated 170m users.
Maggie Shiels is the BBC's technology reporter based in San Francisco.
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First broadcast 10 February 2010
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