In the News: Mars, Toyota, Yelp

AOL, Microsoft and Yahoo forge advertising partnership.

Activision and Electronic Arts let bullets fly in video-game holiday-sales war.

Anheuser-Busch gets label approval for higher-alcohol version of Bud Light.

Barnes & Noble has sought U.S. antitrust probe of Microsoft over e-readers.

Facebook sees recommendations on advertisers' use of "like" by Better Business Bureau.

General Motors reports strong but lower profits.

HSBC raises U.S. bad-loan provisions.

Landry's acquires McCormick & Schmick's Seafood Restaurants.

Mars broadens line of M&Ms holiday products.

McDonald's posts strong same-store sales surge globally.

Olympus spooks investors with cover-up.

Saab keeps court protection for now.

Toyota aims to start fuel-cell sales by 2015.

Yelp eyes $2-billion IPO.

Yum's gets China regulatory approval to acquire Little Sheep.