Creepy Pastas are horror related legends that have been copied and pasted from around the internet. These internet entries are often brief, user generated ghost or alien stories intended to scare readers. They include gruesome tales of murder, suicide and otherworldly occurrences. According to Time magazine, the genre had its peak audience in 2010 when it was covered by The New York Times
In the mainstream media, Creepy Pastas relating to the fictitious Slender Man character came to public attention after the 2014 “Slender Man stabbing“, in which a twelve year old girl from Waukesha, WI was stabbed by two of her friends. The perpetrators claimed they “wanted to prove the [Slender Man] skeptics” wrong. After the murder attempt, some Creepy Pasta website administrators made statements reminding readers of the “line between fiction and reality”.
Other notable Creepy Pasta characters and stories include Jeff the Killer, Ted the Caver and Psychosis. In October 2014, a book called “Creepypasta: Spökhistorier från Internet (Creepypasta: Ghost Stories from the Internet)” was published in Sweden. In May 2015, Machinima Inc. announced plans for a live action web series curated by Clive Barker titled, “Clive Barker’s Creepy Pasta”.
– from WikiPedia