Shoutbox

I'll give you a good example where Linux wins for security.

Suppose you use Firefox 1.0.6 and an unpatched vulnerability is discovered. You already use a normal user account but if this exploit was abused it could allow malicious code to execute. What you could do is set up a new user 'firefox' and always run Firefox with that account's user permissions. In the rare case it might be exploited, the mailicious code could only do stuff inside /home/firefox, which would be an empty directory (of course this assumes you're patched and that there are no local root exploits...).

I know this can be done with Windows too, but Windows is far too ambiguous with what is possible on a user account for my liking.

I like Linux because it's different. It's a nice welcome change from Windows. Its powerful commandline attracts me also.