ON EVERY INTERNATIONAL CAPS LOCK DAY, THIS EXTENSION WILL MAKE YOU UNABLE TO TYPE IN LOWER CASE, AND WILL DISPLAY EVERY WEB PAGE (OR ALMOST) AS IF IT WAS IN UPPER CASE.
FOR YOUR INFORMATION, CAPS LOCK DAY IS ON OCTOBER 22 AND JUNE 28 OF EVERY YEAR. BUT WITH THIS EXTENSION YOU WON'T HAVE TO REMEMBER IT ANYMORE. REALLY.
Check out the source code for Google Chrome