A new tool for advertisers lets them target ads to customers who have already used their services.

Facebook plans to roll out a new advertising tool that will let companies target their ads to existing customers based on their phone numbers and e-mail addresses.

It seems that Russia's defense ministry has little faith in Google's operating systems: it has just unveiled its own encrypted version that has the remarkably familiar feel of an Android.

Russia's very first smart prototype was presented on the sidelines of a Berlin electronics show this week to Deputy Prime Minister Dmitry Rogozin -- an avowed nationalist who oversees the military's technological innovation.

Facebook ramped up efforts Friday to get rid of "Likes" that aren't from people genuinely interested in giving a virtual thumbs up to pages at the world's leading social network.

"We have recently increased our automated efforts to remove Likes on pages that may have been gained by means that violate our Facebook terms" of service, the Facebook security team said in a blog post.

High-tech gadgets to make the lives of senior citizens simpler, safer and more fun are in the spotlight at the world's top showcase for consumer electronics and home appliances.

A jump in demand has prompted organizers of IFA, which opened its annual six-day trade show Friday, to offer their first guided tours for the over-60 set, pointing out what's new and hot for the market of a certain age.

Amazon.com Inc. says it has sold out of its Kindle Fire tablet computer amid expectations of a new model for the holiday season.

The Internet retailer has a major press conference scheduled for next Thursday in Santa Monica, Calif. It's widely expected to reveal a new model of the Fire there, so Thursday's announcement that the first model is "sold out" suggests that Amazon halted production a while ago to retool for a new model.

A Japanese court Friday rejected Apple's claim that South Korean rival Samsung stole the U.S. firm's technology for its own products, the latest ruling in a global patent battle between the tech giants.

The Tokyo District Court ruled that Samsung did not infringe on Apple's patents on its iPhone and iPad computer for some of its own Galaxy smartphones and tablet computer.

A Chinese dissident convicted of subversion based on evidence provided by U.S. Internet giant Yahoo! was released from prison on Friday after serving a 10-year term, his wife said.

Wang Xiaoning, 62, became a cause celebre after a Beijing court named Yahoo Holdings (Hong Kong) as the source of evidence that led to his 2003 conviction, in a public relations disaster for the company.

The repercussions of Apple's billion-dollar patent victory over Samsung were still being felt at Europe's biggest consumer electronics show, as the South Korean firm launched a host of new gadgets.

After losing the biggest patent case in decades, Samsung came out fighting at the IFA show in Berlin which opens on Friday, with a sweeping media launch of smartphones, tablets, a "smart PC" and a voice-controlled camera.

Independent booksellers have found a new partner to help them sell e-books.

Toronto-based e-reading service Kobo has an agreement with the American Booksellers Association to offer e-books at independent stores. Kobo and the booksellers association announced Tuesday that starting this fall around 400 stores will offer e-devices, accessories and selections from Kobo's e-book store.

President Barack Obama reinforced his image as the social media president Wednesday as he took questions from the public in an online chat on the Reddit website.

As Republicans gathered for the nominating convention in Florida, Obama chatted about hurricane relief efforts, the space program and Internet freedom in a wide-ranging discussion.