The code was proposed in 2007 due to threats made to blogger Kathy Sierra.
In March 2007, Sierra abruptly canceled her appearance at the O'Reilly ETech conference in San Diego due to threatening blog posts and emails, including death threats.
Sierra Leone | Santa Cruz de la Sierra | Sierra Nevada | Sierra Club | Sierra Nevada (U.S.) | Kathy Bates | Kathy Mattea | Sierra Entertainment | Ford Sierra | Bo, Sierra Leone | Sierra Leone National Premier League | Sierra | Kathy Griffin | Sierra Nevada de Santa Marta | Sierra Maestra | Sierra Leone People's Party | Sierra Leone Civil War | Kathy Reichs | Kathy Burke | Special Court for Sierra Leone | Sierra Madre Occidental | Rubén Sierra | Kathy Lette | Javier Sierra | Antofagasta de la Sierra | The Treasure of the Sierra Madre (film) | The Treasure of the Sierra Madre | Sierra Leone Creole people | Northern Province, Sierra Leone | Kathy Garver |
In March 2007, Chris Locke used it to defend refusing to remove trolling that Kathy Sierra reported as threatening messages that made her afraid to leave her house, but defending removing the whole site instead.