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.