Guatemalan siblings who lost contact during the country's turbulent 1960-1996 civil strife have been reunited 31 years later, with some help from Facebook.

Ofelia, Avilio and Elsira Funez Velasquez had their tearful reunion at the headquarters of the Mutual Support Group, an activist with the social group, Enrique Barrera, said.

Microsoft chief executive Steve Ballmer on Tuesday said the computer giant had to reinvent itself to avoid being "old and tired" as his company struggles to keep up in the mobile devices sector.

"We're finding ourselves having to start up again," Ballmer said at a conference in Rome where he announced Italy had become the first country in which Microsoft phones were outselling iPhones.

A group of Italian computer boffins have launched a new website, Mafialeaks, aimed at encouraging victims of organised crime and former gangsters to spill the beans, La Repubblica newspaper reported Tuesday.

The site will allow people "to denounce mafia activities anonymously, protecting those who supply the information," the daily said, citing one of the creators.

PlayStudios on Tuesday blurred the line between online and real-world gambling with the release of myVegas Slots smartphone games that let players cash in on perks at Sin City casinos.

Free-to-play versions of myVegas Slots released for Apple or Android smartphones let people test their luck on virtual one-armed bandits such as those found in the Mirage, Luxor, New York New York or other MGM Resorts International properties and then use payouts to get VIP treatment in Las Vegas.

The wife of Jeff Bezos is giving a thumbs-down to a recent book about her husband's company, Amazon.com Inc.

On Monday, MacKenzie Bezos posted a one-star review on the Amazon page for Brad Stone's "The Everything Store," which came out last month and has been received positively by critics and Amazon readers. Bezos wrote that the book was filled with inaccuracies and biased against her husband and Amazon. Spokeswoman Sarah Gelman of Seattle-based Amazon confirmed that the review was indeed written by MacKenzie Bezos.

The Singapore government said Monday it was on "heightened vigilance" following threats from the activist hackers' group Anonymous, but denied that any of its websites had already been compromised.

The statement by the Infocomm Development Authority (IDA) came as Singapore's biggest publisher confirmed users were having difficulty accessing some of its online sites, although no group has claimed responsibility for the incidents.

BlackBerry abandoned hopes of finding a buyer, and instead pegged its future on a $1 billion cash infusion as it shook up top management Monday and named a new chief executive.

The Waterloo, Ontario-based company's announcement comes two and a half months after its largest shareholder Fairfax Financial Holdings Inc. offered to buy the rest of the business and take it private.

Google executive chairman Eric Schmidt called on China to open up Internet access and voiced concern at its latest crackdown on online freedoms in an interview in Hong Kong Monday.

"I have a strong opinion and my opinion is there should be freedom of speech to pursue one's goals for ideas," he told the South China Morning Post.

It is becoming the preferred social network for American teens. It is an important "second screen" for TV viewers of NFL football and "Dancing With the Stars."

It also happens to be a tool for social activists which arguably can help topple governments.

Instagram began displaying ads Friday, as Facebook moved to start making money from the smartphone photo sharing service it bought in a billion-dollar deal last year.

The first ad to pop up was a sponsored photo of a Michael Kors ladies' watch, artfully displayed on a table set elegantly for coffee and biscuits.