"People don't think [authorities] are going to go that far, but little do they know, they are going this far," said David Seltzer, a criminal and cyber crime defense lawyer.
In several of Seltzer's cases, law enforcement agents created a false profile on MySpace and "friended" a suspect or a suspect's friends in an attempt to retrieve information they needed for an investigation."I always tell my clients, if you have any social media pages, take them down, because as soon as something happens, agencies will start Googling your name," Seltzer
Here is a link to Ryan Singel's Wired article on why any article including the term "cyber" is not to be taken seriously.
As usual in this type of article, there is a lot of information about potential abuse of social networking sites by the government but no actual examples of a) a tax cheat actually being caught and forced to pay up or b) the government rescuing a kidnap victim or tracking stolen merchandise based on it.
Again, an article like this needs to enumerate damages to rise about scaremongering and into serious reporting. The lawyer quoted above is trying to drum up business but if he can't identify specific cases where social networking hurt his clients, then it's the reporters job to either walk away or find some on his own.