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.

SXSW: Spotify keeps U.S. in suspense

Will Spotify come to the U.S.? The CEO and co-founder of the music service spoke at the South By Southwest conference, and he wasn't saying.

Toshiba announces Cell TV HDTV

Toshiba trotted out its latest and greatest HDTV, the Cell TV, with its companion media center set-top box.

Sharp QuadPixel technology promises better HDTV color

Sharp announced a new line of Aquos HDTVs, that will add a yellow subpixel to the normal red, green and blue (RGB) colors used in TV pixels.

AT&T Wireless CEO hints at ‘managing’ iPhone data usage

At the CTIA conference in San Diego, AT&T Wireless CEO Ralph de la Vega hinted that iPhone data usage may need to be 'managed' in the future.

Sprint president takes a shot (or two) at AT&T 3G

Speaking at the 4G World Conference in Chicago, Sprint's Keith Cowan used AT&T's 3G network as the punchline to several jokes, underscoring how iPhone rivals are using the issue to promote their own products.

First 4G Android-based smartphone may arrive in 2010

At the 4G World Conference in Chicago, PC World's Mark Sullivan talks to carriers, handset makers, and analysts and concludes a 4G smartphone is on its way.

How much does it really cost to own a smartphone?

PC World looks at the long-term expense of owning a smartphone and finds that there isn't a big difference in total cost of ownership when it comes to the most popular smartphones.

Neuromancer turns 25: What it got right, what it got wrong

William Gibson's groundbreaking sci-fi novel turns 25 today. Here's how tech has changed since the sky was the color of television, tuned to a dead channel.

AT&T brass talks big on future of iPhone

AT&T’s Ralph de la Vega outlined his vision for the iPhone at this week’s Web 2.0 conference in San Francisco.

PC World: iPhone devotees to rock AT&T stores

AT&T is telling its retail outlets to expect lines of hopeful iPhone buyers this Friday.