You could have put the full stop...
... after the word "Important" in that headline...
Twitter and Facebook are failing to create the sort of news revolution that some Web2.0 junkies might like to believe is already largely in play, a new report about the current state of media has revealed. Pew Research Center (PRC), which surveyed 3,000 participants in the US, found in its new study that "recommendations from …
Twitter is still used by a vanishingly small proportion of the population - however one of those sections is journalists, and this is really critical.
If you are a journalist on a print newspaper you probably got a degree from a top university and struggled really hard to get your job. Now you are faced with vanishing budgets, reducing headcount and a profession which is in a state of cynical despair. So where do you go for stories?
Twitter, facebook, mumsnet...and you use wikipedia to verify your sources. Big brands recognise this, which is why making complaints on twitter gets you so much better support - not because they are worried what IT savvy navel gazers like me think...but because they know if it isn't responded to, and it's a slow news day, they might get into a *proper* news source.
Yes, that seems fine to me (at least 99% of the time) though the population is more likely to be about 230 million (ie, adults only). Look up how to determine sample size some time.
Caveat: I do not know how rigorously the survey was conducted but I imagine someone in PRC must have read one or two books on probability and sampling.