I don't know, but I'm glad it's catching on. We used to roll guys up in Iraq that would claim to be totally innocent, and then they'd have a hard drive full of incriminating evidence. Including videos of themselves hi-fiving each other after getting their jihad on. (Some of the best videos are posthumous, as they didn't survive the 'photo shoot') Many are not, and make great evidence.
Savage people are almost always equally stupid. If you're going to do a horrific crime, for the love of God, please videotape yourself doing it. Give the files really obvious names, especially ones that names the crime specifically. The look on your face when you realize how dumb you were for videotaping yourself is priceless.
Just wait until the boys' parents come out in the press talking about how that little tramp seduced their sons.