Social networking giant Facebook has received a $500 million investment from American bank Goldman Sachs and Russian firm Digital Sky Technologies as part of a deal that places a $50 billion value on the Mark Zuckerberg-owned website.

STAMFORD, Conn., Sept.

By Matt Richtel and Andrew Ross Sorkin Hewlett-Packard, the personal computer and printer maker, said Tuesday that it would acquire Electronic Data Systems, the operator of corporate computer systems, for $13.9 billion.

NYTimes.com announced today the launch of a new branding initiative to increase awareness of the tremendous depth and breadth of the site, which is the No. 1 newspaper site in the United States, according to Nielsen//Net Ratings. The campaign is scheduled to launch on Sunday, Sept. 30.

The New York Times announced today the launch of DealBook, a new online financial news report on NYTimes.com featuring up-to-the-minute news and exclusives about Wall Street and corporate America.