Google said Sandberg will be replaced by her deputy, David Fischer.

FORBES: Google Loses Top Exec To Facebook

David Fischer, who oversees all advertising, and Sam Lessin, the inventor of the Timeline, explain how they work together and where this world-changing colossus will go next.

FORBES: Here Comes the Techonomy Conference

The Techonomy 2012 conference outside of Tucson, Ariz. wrapped up with a session featuring two Facebook team members: Sam Lessin, Project Manager, and David Fischer, VP of Business and Marketing Partnerships.

FORBES: Read All About It: The Facebook Effect

Thanks to Bernard Levine, Hillel Markowitz, Tony Lima, Lynn Bateman, David Hallstrom, John Bobek, Ethel Fenig, David Gerstman, Ed Grinberg, Mark Nicholas, Tristan Pinnock, Bill Bredesen, Eric Jensen, John Williamson, Kyle Kyllan, Miguel Rakiewicz, Gregg Geil, David Hoffman, Ronald Morris, Bryan Fischer, J.

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