For the first time, Yahoo has replaced Google as the number one portal of choice, according to a customer satisfaction survey released today. Yahoo’s score is up 4% to 79 on the 100-point scale of the annual University of Michigan American Customer Satisfaction Index (ACSI) on e-business Web sites. While Yahoo’s stock among users is rising, Google’s is on the wane, according to the report. Google fell 3.7% to 78, the second time in as many years that its score declined.

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