A widespread spam attack linking to malware has broken out on Twitter, according to the security firm Sophos.

Google disclosed Friday in an email to the U.K. Information Commissioner's Office that it had not yet deleted all user data collected by its Street View vehicles, as it had agreed to more than 18 months ago.

Facebook seemed to answer at least one burning question about its mobile business on Thursday -- it doesn't plan to build its own smartphone -- but it's still not entirely clear how it will capitalize on its rapidly expanding base of mobile users.

Facebook boosted revenue by 32 percent in its first earnings report as a public company, bringing in US$1.18 billion and topping analysts' expectations slightly.

Forty percent of all Americans said they feel more comfortable interacting online than in person, according to a study released Thursday by digital marketing firm Performics.

The file-sharing company BitTorrent has begun testing an advertising model through which it would share ad revenue with content producers whose work is downloaded through the service, promising a way for artists to monetize informal sharing of their digital content.

Google and the European Commission appear close to a settlement that would end the Commission's investigation of the American Internet giant for potential violations of European antitrust regulations, according to The New York Times.

SmartAsset launched on Tuesday a home-buying decision-making tool that it claims will deliver significantly more personalized advice than existing online mortgage calculators.

Amazon is offering to cover 95 percent of the cost of vocational training courses to help its warehouse staff pursue jobs in other careers, including many that Amazon does not offer, the company said Monday in a letter posted on its home page.

Dropbox's ongoing investigation into a possible security breach has not produced any evidence that its systems have been infiltrated, according to an update Friday to the company's user forum.

Pinterest has locked an undisclosed number of user accounts as a result of a spam outbreak, the company confirmed in an email on Friday.

The venture capitalist Vinod Khosla recently described Silicon Valley as a state of mind, rather than a geographical place. If that's the case, that state of mind can increasingly be found in San Francisco.

Google has reported a profit of $US2.79 billion in the quarter ended June 30, up 11 per cent over the same period of last year, in the company's first financial statement since it finalised its acquisition of Motorola in May.

Microsoft and Google are each taking steps to extend the social networking capabilities in their search services, with the goal of making it easier to find or share useful results.

Skyhook introduced on Wednesday a new version of its location engine for mobile apps that it said will allow smartphones to determine a user's location once a minute throughout the day without draining the battery.