""Spirit Surfing"" is an attempt to preserve and share a body of texts and visual essays written by artist, actor and musician Kevin Bewersdorf between 2002 and 2010, collected and edited by Domenico Quaranta without the explicit consent of the author, but according to his philosophy of sharing. Bewersdorf has been very active online between 2007 and 2009, as one of the leading figures of the so-called ""pro-surfers"" generation. With his works and texts, he had a long-standing influence on the practice and theory of art, not only net-based. When, around 2010, he decided to stop actively promoting himself as an artist, he deleted from the internet any content still under his control. This book is part of a wider project focused on social preservation of ephemeral, net based practices called Share Your Sorrow, and available online at the URL shareyoursorrow.linkartcenter.eu.