Yet another "security" issue with social networks - intelligence agency recruitment:
I would expect this to be a similar problem for law enforcement...
"Herein lies the problem: if you're planning on having a second identity for undercover work, it doesn't help if your photos, friends and real name are splattered all over various social networking sites. Try finding a student at a university who hasn't done just that.
"The UK's intelligence agencies are worried. From schoolchildren on Bebo, through Facebook-obsessed young professionals, to well-networked CEOs on LinkedIn, having an online presence is a must in this day and age. But with the explosion of social networking sites, it has become virtually impossible to find recruits who don't have some sort of an online trail."
Social networking websites make recruiting spies difficult