Wikipedia, the website that calls itself "the free encyclopedia that anyone can edit," has just told one large group of people they can no longer contribute to it. If you're a Scientologist, you're no longer welcome to edit entries on Wikipedia. This policy change came after a number of users with IP addresses associated with the Church of Scientology were making edits that the ten-member Wikipedia arbitration committee decided pushed a Scientology agenda, defying the site's nonpartisan goals. Andrew Lih is the author of the new book The Wikipedia Revolution: How a Bunch of Nobodies Created the World's Greatest Encyclopediaand the host of the "Wikipedia Weekly Podcast." He himself is an avid wikipedian.