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.

From 'Faux-G' to 4G: T-Mobile Announces LTE Network Plan

True to form, the small carrier is late to the next-gen wireless party, targeting its 4G launch for 2013. T-Mobile customers--if they stay around long enough--should benefit.

Weird and Wonderful Music-Making Apps and Toys

A guitar eats an iPad, a tablet becomes a dance-music powerhouse, an iPhone makes like a theremin, and a guitar made of five phones and a cheap speaker cranks out 'Cracklin' Rosie.' And the fun may be just beginning.