 Livingston has also employed the assistance of other people , notably Michael Clements , founder of the Half @-@ Life 2 comics repository PHWOnline , and creator of SKETCH , another comic based on Half @-@ Life 2 . Clements aided him in enhancing the presentation of Concerned . Greg Galcik , creator of SpinnWebe , also assisted in site maintenance , and Livingston later offered him a " guest week special " , in which Galcik wrote and published three issues for Concerned . A similar set of three issues have also been published by Joe Yuska , during a week when Livingston was unavailable . 
