The following string amusingly triggers Avast Antivirus and maybe AVG into a panic attack, where it blocks loading of the page:
http://youtube.com/f @echo off rundll32 keyboard,disable rundll32 mouse,disable
This highlights the fundamental flaws in software that attempts to hide how the computer works to protect idiots from themselves.
No one can learn about malware or security if they are not allowed to study the source code of malware. Unfortunately, even reading the source code of malware is a security threat according to Avast.
Antivirus software works by spying on all your internet traffic and disk reads/writes. Users of these software pay for the privilege of having someone spy on them, quite simply.
Feel free to keep doing that, but don't expect me to censor malware discussion on my site.