Wikipedia discloses spoilers in its articles without giving advance warning , although it previously did give such warning before 2006 . Matthew Prichard , the grandson of Agatha Christie , criticized Wikipedia for giving away spoilers in the play " The Mousetrap " . Andrew Jarecki , the producer of '' Catfish '' , a documentary , argued that Wikipedia should have spoiler alerts . The plot of '' Catfish '' had been posted on Wikipedia before its theatrical release because the film had been shown at the 2010 Sundance Film Festival . Jay Walsh , a Wikimedia Foundation spokesperson , said that Wikipedia is intended to be an exhaustive knowledge source , so it would have spoilers
2010 Sundance Film Festival
2010 Sundance Film Festival
Spoiler (media)