United States

John Allen Paulos in his excellent Who's Counting column at ABC News:

Facebook may join other Internet companies in offering location-based services. The social-networking site plans to let its users to share their location and see the locations of friends, according to published reports.

Facebook could use the service to provide advertisers with targeted information such as the nearest ATM. The feature is expected to be similar to Foursquare, a location-based social network that enables users to "check in" with one another and meet up.

On the heels of the big 3-D television presence at the Consumer Electronics Show in January, Sony and Samsung are joining Panasonic, LG Electronics, and others in promoting the new technology. On Tuesday, Sony said it is aiming for 10 percent of its TV sales within the next year to be 3-D models, and Samsung announced a range of HDTV sets and Blu-ray players will ship later this month.

At a press conference Tuesday in New York City, Samsung announced what it described as the "world's first available full HD 3D LED TV," as well as a variety of related 3-D home entertainment products.

Some Windows PC users may hope the Energizer bunny didn't keep going and going. It turns out the Energizer DUO USB battery charger is a vehicle for attacks on PCs, according to the Department of Homeland Security's Computer Emergency Readiness Team.

US-CERT researchers said Friday that the software that installs with the Energizer charger contains a Trojan horse that gives malicious hackers a back door into Windows machines.

In one of the funnier moments of Sunday's Academy Awards, Steve Martin and Alec Baldwin thought they spotted Avatar director James Cameron in the audience. The hosts whipped out 3-D glasses to scan the audience for the man whose top-grossing film has fueled more interest in 3-D viewing.

Common Sight

While the gag got some laughs, it may not be unusual for more people to carry around 3-D glasses this year. All the top manufacturers are planning 3-D television models.

Apple is attempting to put the brakes on potential for one of the first Windows Phone 7 Series smartphones. Apple's suit against HTC would block the company from releasing its HD2 mobile phone equipped with Microsoft's new mobile operating system in the U.S.

Apple's complaint before the U.S. International Trade Commission would stop the Taiwan-based HTC from importing some of its 7 Series phones into the U.S.