Google is misunderstood, its attorneys say in antitrust trial

Firing back against claims by the U.S. Justice Department that Google operates its ad business as a monopoly, a witness Monday described the mammoth search engine as acting in the best interests of publishers.

"Innovation is at the heart of this business," said Nitish Korula, a research scientist and engineering director for Google. "It's a rapidly changing business. We keep looking for ways to make products better."

Korula described how the company walks publishers through the process of monetizing their websites and determining the kinds of ads appropriate for their brands.

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