U.S. residents are less satisfied with search engines like Google and news websites like MSNBC.com, but happier with Web portals like AOL, a study from the University of Michigan and ForeSee Results has found.

Customer satisfaction with search engines, in aggregate, dropped 1.3 percent in this year’s second quarter, compared with the same period last year, according to the annual E-Business Report, based on the American Customer Satisfaction Index, produced by the university’s Ross School of Business. Among search engines, Google’s customer satisfaction fell 1.2 percent, while IAC/InterActive’s Ask.com saw its score dip 1.4 percent.

Customer satisfaction with Web portals satisfaction climbed 1.3 percent in general, but Yahoo’s score plunged 5 percent. Meanwhile, AOL’s score rose a remarkable 4.2 percent, but the survey data was compiled before the company angered many by releasing members’ search engine records. Microsoft’s MSN score dropped 1.3 percent.

Finally, customer satisfaction with news and information websites sunk 2.7 percent, although CNN.com and USAToday.com each increased their scores by 2.8 percent. ABCNews.com and MSNBC.com each saw their scores drop 1.4 percent, while satisfaction with The New York Times’ website remained flat.

Grouped under the larger banner of "e-business," these three categories—search engines, Web portals and news websites—increased their customer satisfaction by 0.8 percent, compared with last year’s second quarter. Despite its dip, Google ranked first in customer satisfaction with a score of 81, followed by Yahoo with 76. Tied with a 74 score were AOL, MSN, CNN.com and USAToday.com. Meanwhile, ABCNews.com got 73, MSNBC.com and The New York Times’ websites both scored 72, and Ask.com had 71.

Larry Freed, the report’s author, found Yahoo’s steep drop in customer satisfaction significant, which he attributed to the company’s attempts to be "everything to everyone" by packing its homepage with a lot of information and services and, along the way, possibly confusing its visitors.

"Last year, Google was number one, Yahoo was number two and the rest were fighting for third place, but this year Yahoo really dropped. That was a big eye opener," said Freed, president and chief executive officer of ForeSee, a company that measures Web customer satisfaction. Among the companies mentioned in the report, only Ask.com is a client of ForeSee.

Google continues to do a good job of meeting its users’ expectations, while balancing its core Web search service with a raft of new offerings in areas like instant messaging, Web mail, online payments and mapping, Freed said. "Google had a minor drop, but it still leads," he said.