Marcelino Madrigal

Marcelino Madrigal has an excellent blog in Spanish at http://www.mmadrigal.com/ .  He's had many of the same concerns that we have about child pornography on Facebook, and he's also shed light on how difficult it is to get Facebook and some law enforcement to do anything about these users.  The problem isn't limited to Facebook, and Madrigal has also documented problems with child pornography on Microsoft Windows Live.