The NSA's data mining includes the servers of Microsoft, Yahoo, Google, Facebook, PalTalk, AOL, Skype, YouTube, and Apple.
Recently, there has been a startling surge of child pornography online. In 2011, the National Center for Missing and Exploited Children said it received 17.3 million images and videos of suspected child abuse, which is four times more than what they saw in 2007.
Over the weekend, Google announced ambitious plans to wipe the web clean of such images. Here to tell us more about this is Larry Magid, tech writer with Forbes. He's also a board member with the National Center for Missing and Exploited Children.