Mark SullivanSenior Editor, PCWorld

Mark has been writing about networks - social and wireless - since 2005. Independent and outgoing, he enjoys travelling, wine, and skiing. His favorite book is "Atlas Shrugged" by Ayn Rand.

Google I/O: Chrome Browser Improvements; Chrome and Google Drive for iOS; New Chromebooks

Google rolled out a series of improvements to some of its core web products on Day Two of its giant developer conference in San Francisco.

Analysis: Verizon 'Share Everything' Plans a Mixed Bag for Consumers

Starting on June 28, all new Verizon customers will have a single data plan for all their wireless devices. But the devil is in the details.


Data Snatchers! The Booming Market for Your Online Identity

A huge, mostly hidden industry is raking in billions collecting, analyzing, and sharing personal information you put on the Web. Should you be worried?

Windows Phone 7 Users Can't Upgrade to WP8

If you own a Windows phone now, you won't be included in the bright future of Windows Phone 8. There is a consolation prize, however--Windows Phone 7.8.


Windows Phone 8 Will Be Deeply Integrated With Windows 8 OS

Microsoft says its new mobile operating system, Windows Phone 8, will be deeply integrated with the Windows 8 OS in tablet and desktop PCs. No upgrade for existing WP7 users, however.


Microsoft Announces Surface Tablet PC

The software giant has jumped into the tablet fray with a device it says will make the most of its Windows 8 OS.

Why Google+ Can Still Beat Facebook

Even as Facebook goes public and nears 1 billion users, Google+ still has a chance to become a major contender if it simply plays to its own strengths.

Google Beefs Up Maps as Apple Breakup Nears

Google's Mapping team goes offline with mobile Google Maps, shows off backpack-sized Street View contraptions, and wows with new 3D fly-over technology.


Facebook IPO, Nvidia GTC, Diablo 3, and Lenovo ThinkPad X1 Carbon on PCWorld Podcast #138

The PCWorld editors discusses the impact of Facebook's IPO, news from the Nvidia GTC, the launch of Diablo 3, and Lenovo's slick new ultrabook.

TechHive Infographic: 4G LTE Speeds, Verizon vs. AT&T

Our infographic shows each carrier’s average LTE speed in the cities we tested where both LTE services are offered.

Ebook for Tech Travelers Compares U.S. Airport Amenities

PCWorld's "20 Best Airports for Tech Travelers" ebook compiles data on electrical outlets, USB ports, charging stations, Wi-Fi, and more at the nation's 40 busiest airports.

Facebook IPO: Why Your Data Is Worth $104 Billion

Investors will pressure Facebook, the public company, to find new ways of making money from users' personal data. If times get hard, can Facebook do that without endangering user privacy?

4G Mobile Hotspot Face-Off: AT&T, Verizon LTE Hotspots Fight to a Draw

The AT&T Elevate 4G and the Verizon MiFi 4620 Jetpack are easy to set up and use, and both offer fast speeds--but both suffer from limited battery life, too.

Sprint Launches 'Tri-Fi' 4G Mobile Hotspot

The new Sierra Device will catch WiMAX, LTE and CDMA cell signal and turn it into a little Wi-Fi network for the whole family!

3G/4G Performance Map: Data Speeds for AT&T, Sprint, T-Mobile, and Verizon

See our neighborhood-by-neighborhood test results for 127 locations in 13 cities. Click the map for raw speeds, as well as Web page and video load times.