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.

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?

smartphone users

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

Comparison of 4G LTE speeds between Verizon and AT&T in 10 U.S. cities. Who's got the fastest next-gen wireless?

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.

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

Click the map for our neighborhood-by-neighborhood speed test results, as well as Web page and video load times, at each of our 127 testing locations in 13 cities.

3G and 4G Wireless Speed Tests, Windows 8 Editions, and Google Drive on PCWorld Podcast #136

Can Google Drive compete with Dropbox? Which wireless carrier has the best real-world speeds? How many editions of Windows 8 will you really have to choose from?

3G and 4G Wireless Speed Showdown: Which Networks Are Fastest?

We tested 3G and 4G wireless data transfer speeds--indoors and out--for AT&T, Sprint, T-Mobile, and Verizon, at multiple locations in 13 major cities. Here's what we found.

The 'Archive Team' Rescues User Content From Doomed Sites

Jason Scott and his merry band of hacker-archivists are trying to preserve our “digital history.”

SXSW in Review, Problems With the New iPad, and GeForce 680 on PCWorld Podcast #134

Mark tells us what was new at SXSW, Melissa raves about the iPad display but points out battery problems, and Nate enthuses about Nvidia's efficient new GeForce GTX 680.

Beats Audio (HTC) Acquisition of MOG All But Done, Sources Say

A price in the neighborhood of $17 million has been agreed upon, and the parties are now working out final details before an announcement is made, sources close to the situation say.