Facebook's new online messaging service makes users of the social networking site more vulnerable to identity theft by cybercriminals, computer security firm Sophos warned Thursday.

It urged users to be aware of the security risks before signing up for Facebook's next-generation online messaging service that blends online chat, text messages and other real-time conversation tools with traditional email.

China overtook the United States at the head of the world of supercomputing on Sunday when a survey ranked one of its machines the fastest on the planet.

Tianhe-1, meaning Milky Way, achieved a computing speed of 2,570 trillion calculations per second, earning it the number one spot in the Top 500 (www.top500.org) survey of supercomputers.

YouTube said Thursday that 35 hours of video are being uploaded to the video-sharing site every minute, up from 24 hours per minute in March.

Hunter Walk, director of product management at Google-owned YouTube, said the number of uploads to YouTube has more than doubled in the last two years.

Google's Android mobile operating system surged past Apple's iPhone and Canada's Blackberry in the third quarter to become the second biggest smartphone platform after Nokia's Symbian, research firm Gartner said Wednesday.

Gartner said Finland's Nokia sold 29.5 million smartphones during the third quarter of the year for a 36.6 percent share of the worldwide market, down from 44.6 percent a year ago.

Internet search giant Google began rolling out a new feature Tuesday called "Instant Previews" that allows Web surfers to sample a website without having to click through to the page.

Clicking on a small icon of a magnifying glass next to a search result gives a user a visual snapshot of the most relevant content on a particular page in a pop-up box off to the side.

Amazon is increasing the revenue split for newspapers and magazines sold through its Kindle electronic bookstore.

Amazon said late Monday that starting on December 1, publishers will earn 70 percent of the retail price minus delivery costs for each newspaper or magazine sold in the Kindle store.

The commercial tsunami unleashed by the iPhone has served as a launch pad for the videogame industry in Montreal, which hopes to seize on the success of Apple's smartphone.

Hundreds of participants in the two-day Montreal International Game Summit that opens Monday in Quebec's big city will be looking for ways to better milk the gaming market cow, in the face of Apple's golden example.

A U.S. jury has ordered a Minnesota woman to pay 1.5 million dollars for illegally downloading 24 songs in a high-profile digital piracy case.

Jammie Thomas-Rasset, a single mother of four, was found liable by a jury on Wednesday of copyright infringement for using KaZaA peer-to-peer file-sharing network to download the songs over the Internet.

Israeli scientists have developed a powerful explosives sensor more sensitive than a sniffer dog's nose, which they say would have made it easier to detect cargo bombs like those sent last week.

The nanotechnology-based sensor is capable of detecting numerous types of explosives and can also be adapted to detect chemical and biological toxins, Tel Aviv University announced on Tuesday.

Israeli scientists have developed a powerful explosives sensor more sensitive than a sniffer dog's nose, which they say would have made it easier to detect cargo bombs like those sent last week.

The nanotechnology-based sensor is capable of detecting numerous types of explosives and can also be adapted to detect chemical and biological toxins, Tel Aviv University announced on Tuesday.