While this is an interesting article, i don't think it provides sufficient nuance to be useful. A person's ability to operate in a situation (their digital fluency, for example), the types of tasks that they are doing, and the intensity of the attention they need to apply in a situation should determine the degree to which they attempt to multitask. The more fluent people we've seen know when to shut down their laptop or crackberry when they know they won't be able to pay attention, and when the context calls for them to keep it open.
When the camera switches on in one of the busiest courtrooms in Massachusetts, murder arraignments, traffic and drug cases heard there will become fodder for a new experiment: how bloggers and other citizen journalists can cover courts using new media and social media.
