OK number 1 - you really need to learn the real defination of "hacker" then spout you mindless babble. I feel so sorry for your kids You don't even know what you are talking about. NONE of those programs mentioned have to do with "hacking." DUH! Linux is a Open Source operating system. Open source means that everything is shared. Anyone can see the source code and modify it to their needs. Just because something is free doesn't mean it's used by only hackers. Yes let's define "hackers."
hack·er1 (hkr)
n. Informal
One who uses programming skills to gain illegal access to a computer network or file.
Well, by this definition, Linux, Bonzi Buddy and the numerous other programs listed are NOT good signs of someone being or becoming a hacker.
Obviously your children are smarter then you and you just felt jealous because your son knew more then you. Maybe you should try Linux and the numerous other programs you mentioned becoming coming to your false conclusions. So far, you sound like an uneducated dunce. Read read read educate educate educate learn learn learn - then speak up otherwise you'll just get laughed at severely.