Free Comic Book Day, which takes place on Saturday, May 2, is a nationwide celebration of the form, which, like other print mediums, is struggling to survive in today's techno-happy world. And Time Warp in Boulder is pulling out all the stops. Daniel Crosier, an event organizer and co-creator of the Bartholemew of the Scissors series, will appear at the store alongside a slew of other comics notables, including John Porcellino, known for both his King-Cat books and the cult band known as the F