Washington, D.C.,United States

A new study shows that more than half of teenagers mention drugs, alcohol, sex or violence on their MySpace pages. Yet getting teens to clean up their pages is easier than many might assume, researchers say.

More than 90 percent of adolescents have Internet access, and about half of these use social networking sites, such as MySpace or Facebook, according to the study of 500 18-year-olds in Monday's Archives of Pediatrics & Adolescent Medicine.

China is starting a long-delayed introduction of third-generation mobile phone service, setting off a politically charged scramble by foreign and Chinese equipment makers for up to $41 billion in orders.

Chinese sales could be crucial for suppliers such as Motorola Inc., Alcatel-Lucent SA and Nokia-Siemens Networks as global demand slumps. State media say the largest Chinese carrier, China Mobile, expects to sign up 100 million 3G subscribers -- more than most nations' entire mobile markets -- in the next three years.

Count Washington Redskins season ticketholder Rick Cable as a big supporter of the NFL's new fan code of conduct.

During the Redskins' 23-6 loss to the Pittsburgh Steelers on Nov. 3 at FedEx Field just outside Washington, Cable says, an obnoxious Steelers fan kept waving a "Terrible Towel" in the 47-year-old Cable's face and screaming, "Redskins suck!"

Rather than escalate the confrontation, the Lusby, Md., resident quietly sent a text message to the stadium's security command center. Security people responded quickly. When the Steelers fan gave them a hard time, he was ejected.

Video games may seem expensive when compared with other entertainment media, such as DVDs or CDs. But when you do the math, video games are some of the most cost-effective gifts you can give.

Take a $60 game such as "Fallout 3." I've played it for about 80 hours, which works out to 75 cents per hour. Your typical DVD purchase costs about $10 an hour, so what's the real bargain?

Google Inc. denied that it had reversed its stance on the issue of "Net neutrality" and dismissed a story in Monday's edition of The Wall Street Journal on the subject as "confused."

Citing undisclosed sources, the newspaper reported that Google had been in talks with major cable and phone companies about getting preferential treatment for traffic to and from its sites.

Delta Air Lines is taking Internet access to the skies this week with the launch of Gogo Inflight Internet service on board six of its planes. Delta is introducing the service with a free trial that lets consumers experience the technology.

Monday's announcement highlights the first of more than 300 Delta domestic planes that will soon feature in-flight Internet, according to the company.