Time to crack down on your privacy settings. The voyage of five Muslim men from Northern Virginia to al Qaeda's home base in Pakistan this month points to the growing sophistication of online recruiters. Investigators say the five men who were apprehended in Lahore on Tuesday were recruited by the Taliban through YouTube and email exchanges. But their apprehension also points to the limits of Web recruiting, The Washington Post says, as Osama bin Laden's organization turned them away in the end, fearing they were spies, and saying they needed someone beyond a Web contact to vouch for them. "Online recruiting has exponentially increased, with Facebook, YouTube and the increasing sophistication of people online," said a Homeland Security official.