Repent!!! Er, I mean Revalidate !!!
Are you an advocate for Microsoft or the other guys? Are you sure? Well, take the test at https://theheadlemur.typepad.com/ravinglunacy/2007/02/windows_genuine.html. Pretty funny. Scary, too.
Discovered at https://www.gapingvoid.com/Moveable_Type/archives/003746.html.