The 'Craigslist Murder Confession' meme taps into the internet's collective anxiety and fascination with the unpredictable nature of anonymous classified sites. It usually plays on the trope of an ordinary listing—like selling used furniture or electronics—taking a sudden, dark turn into a criminal admission or an unsettling detail. This style of humor gained traction as true crime culture collided with internet shitposting, highlighting the absurdity of finding something horrifying hidden within a mundane digital space. It is frequently used to mock people who overshare or to create fictional, unsettling scenarios for comedic effect, often utilizing a gritty or low-quality aesthetic to mimic the look of early 2000s internet forums.