James Walker is Lullabot's Director of Education where he oversees the company's public workshops, seminars and private Drupal trainings, combining his passion for both technology and teaching. A leader in the Drupal community, James is a founding member of the non-profit Drupal Association and the Drupal security team. As a long-time member of the Drupal community, James maintains over a dozen modules and has contributed countless patches to Drupal core. He is one of the authors of O'Reilly's upcoming book Using Drupal.

A long-time believer in Open Source and Open Standards, James has spent years co-ordinating Drupal's involvement with other communities such as Jabber/XMPP and, most recently, OpenID. An engaging speaker, James is a frequently requested presenter at many types of technical conferences. His humorous and informative lectures have been among the best-attended at DrupalCons, starting with the first—four years ago. James is known as "walkah" on drupal.org.

Kristof De Jaeger is a senior Drupal developer at Krimson with a focus primarily on module development. His first baby steps with Drupal were around 2005 and since then, he's been hooked helping out the community on IRC, writing modules, testing out patches, and spreading the word to everyone interested in web development.

Bruno De Bondt currently lives in Brussels, Belgium, where he does web and tech work for Indymedia.be (IMC Belgium). This involves Drupal site development and theming, system administration, and ocassional GNU/Linux support. He studied journalism in Ghent (Belgium) and Utrecht (The Netherlands), where he specialised in internet and international journalism.

After developing a website for a school project, he dived further into web development. Over the last few years, he built and managed websites for several NGOs and non-profits. After dabbling with several CMSs, he discovered Drupal in 2005, while looking for software to run the new Indymedia.be website.

The Indymedia.be site has been running on Drupal since autumn 2005. The switch to Drupal coincided with a choice of the Indymedia.be team to create a broadly oriented progressive citizen news website, instead of the more in-crowd activist website it had been before. Drupal has played a crucial role in this process, enabling Indymedia.be to run a solid and secure website, while at the same time allowing a high degree of flexibility. At the time of writing. the Indymedia.be tech team is hard at work on its new website, leveraging Drupal's capabilities even more—it's amazing what you learn in three years' time. A lot of the practices and tips discussed in this book are part of Indymedia.be's new site. Thanks Aaron!

Being a trained journalist, Bruno still does some writing work now and then. He co-authored 'Media-activisme/Don't hate the media, be the media', a media-activist guide (2004— www.media-activism.be). He also did editing and reviewing work for 'Burgermedia', a reader discussing citizen media in Belgium and abroad (2008— www.burgermedia.be).

Ryan Shrout is the owner and editor-in-chief of PC Perspective, a PC hardware and technology review website. Before joining the hardware world Ryan was a CS student who worked primarily in web technologies PHP, MySQL, JavaScript, and more. He maintains and develops custom CMS systems for PC Perspective, among others, as a hobby and has recently adopted Drupal for future projects going forward. Ryan's background in a wide array of software and hardware allows him a unique view of the open-source community.