Yahoo Inc posted a sharply lower quarterly profit on nearly flat sales, but its shares rose 8 per cent on the Internet media company's plan to cut at least 10 per cent of its work force to save costs.

Yahoo, the leading provider of online display advertising, said on Tuesday it planned to cut at least another 10 per cent of its roughly 15,000-strong global work force, and reduce its expense-run rate by around $400 million by the end of 2008.

The planned job cuts of more than 1,500 employees expand an earlier cut of roughly 1,000 jobs, or 7 per cent, that Yahoo made in February. Chief Financial Officer Blake Jorgensen said Yahoo was prepared to further cut jobs and other expenses in 2009 if the economy continues to deteriorate.

Yahoo is cutting its work force in high-cost markets and hiring aggressively in lower-cost locales such as Eastern Europe, India and Southeast Asia.

"The stock is up," Cowen & Co analyst Jim Friedland said. "It's not up on better-than-expected results. It's up on a lack of a complete meltdown in the business," he said.

The Silicon Valley-based Web pioneer said net income for the third quarter tumbled to $54.3 million, or 4 cents per diluted share, from $151 million, or 11 cents per diluted share.

Gross revenue, including payments to affiliated websites that carry Yahoo ads, edged up 1 per cent to $1.79 billion. Net revenue was $1.325 billion, compared with the average Wall Street estimate of $1.37 billion, according to Reuters Estimates.

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