Facebook already assured of becoming one of the most valuable U.S. firms when it goes public later this month, now must convince investors in the next two weeks that it is worth all the hype.

Top executives at the world's leading social network have kicked off their all-important road show on Wall Street -- an intense marketing drive ahead of the company's expected trading launch on the tech-heavy Nasdaq on May 18.

Jurors in a high-stakes court battle between Google and Oracle told a judge on Friday that they were in unison regarding verdicts on all but one of the four copyright counts in the case.

US District Court Judge William Alsup sent the 12-member jury home for the weekend, telling them to return Monday to either reach agreement on the final count or, failing that, reveal what they have decided.

A hedge fund with a large stake in Yahoo! on Friday demanded the immediate ouster of chief executive Scott Thompson, saying he had lost credibility by misrepresenting his educational background.

The move by the investment fund Third Point stepped up an ugly battle over control of the struggling Internet pioneer.

Apple's iPad outmuscled its Android-powered tablet computer rivals in early 2012, in a global market suffering from post-holiday hangover, a survey showed Thursday.

Global shipments of tablet devices and e-readers slumped 38.4 percent in the first three months of 2012 to 17.4 million, compared with a fourth quarter pumped up by the holiday gift-giving season, according to research firm IDC.

The Daily, a digital newspaper created by Rupert Murdoch's News Corp., has been launched as an application for the iPhone, the creators said Thursday.

The app was launched last year for the iPad tablet with much fanfare, generating what the company said was "hundreds of thousands" of downloads.

Facebook moved closer toward its hotly anticipated share offering Thursday, setting a price range that values the social network below some expectations but establishes it as one of the most valuable tech firms.

An updated regulatory filing called for shares to be priced between $28 and $35, which would value the California firm between $70 billion and $87.5 billion.

South Korea's Samsung Electronics on Thursday unveiled its latest flagship smartphone at a London launch as it seeks to cement its position as the world's best-selling mobile phone maker.

The Galaxy S3 boasts a 4.8-inch screen (12.2cm), 22 percent larger than the Galaxy S2, the hugely popular predecessor that helped the company overhaul Nokia as the world leader.

In a flashy presentation to advertisers, YouTube promoted its new channels of original programming, while pledging to spend $200 million to help market them.

That's roughly twice what the Google Inc.-owned video site has spent launching some 100 channels of niche-oriented programming. The channels are an ambitious initiative from YouTube, approximately halfway through its rollout.

Nokia, one of the world's leading mobile phone makers, said Wednesday it had filed patent infringement lawsuits against mobile phone and electronics groups HTC, RIM and ViewSonic in the United States and Germany.

"Though we'd prefer to avoid litigation, Nokia had to file these actions to end the unauthorized use of our proprietary innovations and technologies, which have not been widely licensed," Nokia said in a statement.

Research in Motion Ltd. says future BlackBerry models will still offer physical keyboards.

Some reports suggested RIM would ditch the physical keys favored by its users, but CEO Thorsten Heins said Wednesday that RIM won't lose the focus on physical keypads.