for its publication. King has used other pseudonyms. The short story "The Fifth Quarter" was published under the pseudonym John Swithen (the name of a character in the novel Carrie), by Cavalier in April 1972. The story was reprinted in King's collection Nightmares & Dreamscapes in 1993 under his own name. In the introduction to the Bachman novel Blaze, King claims, with tongue-in-cheek, that "Bachman" was the person using the Swithen pseudonym. The "children's book" Charlie the Choo-Choo: From the World of The Dark Tower was published in 2016 under the pseudonym Beryl Evans, who was portrayed by actress Allison Davies during a book signing at San Diego Comic-Con, and illustrated by Ned Dameron. It is adapted from a fictional book central to the plot of King's previous novel The Dark Tower III: The Waste Lands. Digital era In 2000, King published online a serialized horror novel, The Plant. At first the public assumed that King had abandoned the project because sales were unsuccessful, but King later stated that he had simply run out of stories. The unfinished epistolary novel is still available from King's official site, now free. Also in 2000, he wrote a digital novella, Riding the Bullet, and saying he foresaw e-books becoming 50% of the market "probably by 2013 and maybe by 2012". However, he also stated: "Here's the thing—people tire of the new toys quickly." King wrote the first draft of the 2001 novel Dreamcatcher with a notebook and a Waterman fountain pen, which he called "the world's finest word processor". In August 2003, King began writing a column on pop culture appearing in Entertainment Weekly, usually every third week. The column was called The Pop of King (a play on the nickname "The King of Pop" commonly attributed to Michael Jackson). In 2006, King published an apocalyptic novel, Cell. The book features a sudden force in which every cell phone user turns into a mindless killer. King noted in the book's introduction that he does not use cell phones. In 2008, King published both a novel, Duma Key, and a collection, Just After Sunset. The latter featured 13 short stories, including a previously unpublished novella, N. Starting July 28, 2008, N. was released as a serialized animated series to lead up to the release of Just After Sunset. In 2009, King published Ur, a novella written exclusively for the launch of the second-generation Amazon