A Google spokesman did not respond to a request for comment.

A Google spokesman declined to comment about the new search tool.

A Google spokesman declined to comment on the service.

A Google spokesman said in an e-mail message that he was unavailable yesterday to clarify the statement.

A Google spokesman did not return a phone call and an e-mail message seeking comment.

A Google spokesman did not return calls seeking comment.

A Google spokesman said the company would make more details available soon.

A Google spokesman declined to comment on its sales.

A Google spokesman declined to say whether the company had ever dropped advertisers for bad behavior.

A Google spokesman appeared to have ruled out adoption.