Multiple screens: Over one half of all cell phone owners use their phones while watching television, according to a new study from the Pew Center for Internet and American Life Project. Cell phone owners use their phones to keep themselves occupied during commercial breaks, talk to other people watching the same show, verify whether what they hear on TV is true or not, and to log on to sites to see what other people are saying about a show.

Younger users are, perhaps unsurprisingly, more likely to be “connected viewers.” About 81 percent of cell phone owners surveyed between the ages of 18 and 24 say that they fit into this category.

Google updates E.U. settlement proposal: Google has updated the list of concessions it submitted to the European Union in order to settle its antitrust investigation, the Financial Times reported. The report said that E.U. Competition Commissioner Joaquin Almunia has asked Google executive chairman Eric Schmidt to clarify some points made in Google’s original offer. The original terms of the deal, as The Washington Post reported, were not publicly disclosed.

Microsoft faces browser questions from the European Union: The European Commission has reportedly opened an investigation into whether or not Microsoft has kept up with its commitments to offer a choice of browsers, the Associated Press reported.

The company was supposed to provide a “browser choice screen” to its users within its Windows operating system, something that the company itself reportedly said it had “fallen short” of due to a technical error with the latest version of Windows 7.

Marissa Mayer takes over at Yahoo: Yahoo threw a curveball Monday, naming Marissa Mayer, who has been Google’s vice president of location services, as its new chief executive. In a news release, Mayer said that she is excited to take on the new challenge.

“Yahoo’s products will continue to enhance our partnerships with advertisers, technology and media companies, while inspiring and delighting our users. There is a lot to do and I can’t wait to get started,” Mayer said.

Yahoo stock was up, then down on Tuesday as the company prepared to present its latest earnings report. The stock was trading around $15.62 in mid-afternoon trading.

Mobile phone access: A new study from the World Bank has found that around three-quarters of the Planet’s population now has mobile phone access. The number of mobile subscriptions across the world — both pre- and post-paid — has grown from less than 1 billion in 2000 to over 6 billion, the study said. And, with so many people buying up multiple subscriptions, the study said, the number of mobile subscriptions is expected to quickly pass the human population.