Life on Magrs (in-universe)

Around the early 2010s, Paul Magrs had a blog, which Fester Cat used to review books. (PROSE: The Story of Fester Cat) Fester then used the blog to publish a short story which Fester wrote to publicize The Story of Fester Cat (PROSE: Fester and the Christmas Mouse) in 2013. (PROSE: The Story of Fester Cat)

Behind the scenes
Paul's blog isn't named in The Story of Fester Cat, but in the real world it is known as "Life on Magrs", a play on the David Bowie song "Life on Mars" and Paul's surname.