Christian Crumlish has been participating in, analyzing, designing, and drawing social interactive spaces online since 1994. These days he is the curator of Yahoo!’s pattern library, a design evangelist with the Yahoo! Developer Network, and a member of Yahoo!’s Design Council. He is the author of the bestselling The Internet for Busy People, and The Power of Many, and co-author of the new Designing Social Interfaces with Erin Malone. He has spoken about social patterns at BarCamp Block, BayCHI, South by Southwest, the IA Summit, Ignite, Web 2.0 Expo, IDEA, PLoP, and Web Directions. Christian has a bachelor’s degree in philosophy from Princeton. He lives in Oakland with his wife Briggs, his cat Fraidy, and his electric ukulele, Evangeline.