This week opens the much anticipated Web 2.0 Summit taking place in San Francisco, with everyone from Rupert Murdoch to the founder of Facebook on hand to cut deals and promote their vision for the web. This hour of Forum looks at social networking, widgets and other emerging trends that make up the universe of Web 2.0.

Guests:
Brad Stone, technology correspondent for the New York Times
Sarah Lacy, author and columnist for Business Week

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