I found an old, but funny article on telling if your son is a hacker. It's sad...trust me...
They spell 'Linux' wrong several times, by writing 'Lunix' which is for the C64. Anyway, enjoy.
http://www.adequacy.org/stories/2001...2056.2147.html
A short quote, "Excessive time spent on the computer, communicating with his fellow hackers may cause temporary damage to the eyes and brain, from the electromagnetic radiation."
Also, read the comments, VERY funny....