Originally Posted by POW R TOC H
Here's how I do it :
I give them a chance to try linux on my PC (I have a special home dir on a separate partition for them, they have their own username and pass) but they don't have access to anything that can damage my system.
Any ordinary user account (even your own) shouldn't be able to access anything that'll damage your system. Only the root account should have that access, and you should almost never be running as root.