The Marks were represented by Fred Bernstein of Westside Estate Agency in the transaction.

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The agency characterized the transaction as being done on an "open bank basis, " with no risk to the deposit insurance fund.

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It also requires that a U.S. agency take responsibility for each transaction, and it gives CFIUS a relatively brief review process to determine whether a proposed acquisition by a foreign firm poses a risk to national security.

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Digital is the fastest-growing and arguably most strategic sector of the advertising market, yet an agency executive recently told me that transaction costs are 300 percent greater than for television.

FORBES: Making Digital Advertising More Efficient

In 2006, the agency signed off on a 2003 intracompany transaction that moved foreign rights to its search technology to an Irish subsidiary managed in Bermuda called Google Ireland Holdings.

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Charles Grassley, R-Iowa, asked Cox to provide specific details about the SEC's role in the Bear Stearns transaction, and whether the agency is investigating any suspicious trading or potential manipulation as a result of the deal.

FORBES: Details Of The Deal

When enough computers are equipped to do business this way, e-speak becomes a dynamic web of interactions: In the trip to Paris a travel agency might be at the center of the transaction.

FORBES: The Net's Big Thing