Frederick Cheung is Chief Wizard at Texperts where he has been using Rails since 2006. He is based in Cambridge (UK) and when not consuming fine ales he blogs at spacevatican.org.

Mike Gunderloy is an independent consultant who brings 25 years of experience in a variety of languages to bear on his current work with Rails. His near-daily links and other blogging can be found at A Fresh Cup.

Emilio Tagua — a.k.a. miloops — is an Argentinian entrepreneur, developer, open source contributor and Rails evangelist. Cofounder of Eventioz. He has been using Rails since 2006 and contributing since early 2008. Can be found at gmail, twitter, freenode, everywhere as miloops.

Heiko Webers is the founder of bauland42, a German web application security consulting and development company focused on Ruby on Rails. He blogs at http://www.rorsecurity.info. After 10 years of desktop application development, Heiko has rarely looked back.

Tore Darell is an independent developer based in Menton, France who specialises in cruft-free web applications using Ruby, Rails and unobtrusive JavaScript. His home on the internet is his blog Sneaky Abstractions.

Jeff Dean is a software engineer with Pivotal Labs.

Cássio Marques is a Brazilian software developer working with different programming languages such as Ruby, JavaScript, C++ and Java, as an independent consultant. He blogs at http://cassiomarques.wordpress.com, which is mainly written in portuguese, but will soon get a new section for posts with english translation.