OS X asks you to enter your password for anything to install itself into system areas and such. As long as you don't enter your admin password, nothing will be installed.I'm confused about the password thing. Put my password into what? You mean don't make an account for someone to log on my macbook pro?
I got another question guys. How does Unreal Tournament 2004 run on a macbook pro? I've never played it, but I've heard really good things about the game. How do you guys like it compared to Quake 3 arena?
If a malicious website wanted to install a Trojan on your system it would at some point in it's process require you to enter the admin password. That's why the previous poster said you'll be safe as long as you don't put in your password (while surfing porn).