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Interviewed on stage by conference chairman John Battelle, Brin lamented Yahoo's decision to enter into a search outsourcing deal with Microsoft.

"I think it's a shame Yahoo plans to abdicate that area because they were doing interesting things," Brin said about the deal, which calls for Yahoo to turn off its back-end search crawling and indexing systems and instead use Microsoft's Bing to power its search engine.

Brin declined to say whether he thinks government regulators should or shouldn't approve the Yahoo-Microsoft deal, but he complimented Yahoo on what he called interesting innovations in search.

Since announcing the deal, Yahoo executives have gone to great lengths to say the company will remain a player in search by continuing to innovate at the user interface level, competing even against Bing for users.

Asked for his opinion on Bing, which Microsoft launched in May, Brin said he has used it, just like he uses all search engines, and that it also has interesting features.

"Bing has reminded us that search is a very competitive market," Brin said.

A big disappointment for him has been Google's delay in releasing a Mac OS version of its Chrome browser. "This delay is something many of us suffer through," Brin said.

The Mac OS version isn't even at a beta-test level yet, but rather at a much earlier stage of development, he said.

Brin reiterated his surprise at the acrimonious controversy that has surrounded the company's Book Search service since Google started scanning and digitizing millions of books from library collections without always obtaining permission from copyright owners.

Google hammered out a settlement a year ago with U.S. authors and publishers, who sued it for copyright infringement in 2005, but the settlement came under heavy criticism and is being reworked, particularly because the U.S. Department of Justice recommended it be rejected by the judge overseeing the case.

"I'm surprised at the level of resistance," Brin said.

However, he remains optimistic that the revised settlement, which is still in the works, will be approved and that Google will be able to proceed with its plan to make tens of millions of books available online.

Brin also said he takes exception to criticism from the publishing industry that Google has unfairly profited from the content of newspapers and magazines.