Multitasking & Web 2.0

I came across an interesting review of a recent study on multitasking. The study highlights the impact of multitasking on each individual using the internet, particularly web 2.0 and social web users. The review is in Arabic, but you still can watch the video or check the bibliography list at the end of that article.
I find this article interesting since I still ask myself the same question, do we really need to be multitaskers? in other words, do you think people who perform multitasks are more productive or rather maintain the same product quality people in the past had? This could be another question for further investigation or studies..