Google is trying once again to challenge Facebook's domination of the social networking business. Its main social networking site "Orkut" is very popular in Brazil, but in the rest of the world, Google trails Facebook.
But the company has a new attempt to catch up.
The new social network is called Google Plus, and you're not allowed to join it. At least, not yet.
"It's small but growing," says Bradley Horowitz, who oversees Google's communications products and social applications.
Traditionally, intelligence agencies have relied on top-secret information to track changes in other countries. But wiretaps and secret intercepts didn't help U.S. officials predict the Arab Spring that has brought revolution across the Middle East and North Africa.
In hindsight, officials say there could have found some clues about what was about to happen if they had read open sources more closely. Now they are searching for systematic ways to do that.
Reporters in Cairo say the number of protesters in Tahrir Square today is noticeably larger than in the past few days and that the anti-government turnout is among the biggest in the 15 days since the demonstrations began.
First, in conjunction with Apple, News Corp. founder Rupert Murdoch launched a news app called The Daily that publishes exclusively on the iPad.
"New times demand new journalism," Murdoch said to reporters at Manhattan's Guggenheim Museum. "Our challenge was to take the best of traditional journalism — competitive shoe-leather reporting, good editing, a skeptical eye and combine it with the best of contemporary technology."
Tablet computer shipments more than doubled in the fourth quarter. But while holiday sales were strong for the product, the news wasn't quite so jolly for Apple. According to researcher Strategy Analytics, Apple's iPad went from 96 percent of market share to 75 percent. Tablets based on Google's Android operating system gained ground.