Loud Thinking - By Rails' original developer, David Heinemeier Hansson. (24)slash7 - Focus: Rails and web design; very useful reading for RoR developers; by Amy Hoy. Revolution on Rails - Focus: using Rails to build, improve, maintain the Revolution Health portal; descriptions, tips, screenshots, syntax colored code samples, video, links to downloads. Riding Rails - Official Ruby on Rails team group blog; essential for learning of security updates, and overview of full Rails community. Ruby on Rails Security Project - Covers security issues in and related to RoR. Astrails - Provides informations about rails and other newest web technologies. Craz8 - Offers development tutorials and tips. Haught, Martin - Technical blog focusing on ruby, ruby on rails and agile development. Evan Weaver: Snax - Blog about web scalability and performance in Rails by one of the lead engineers at Twitter. Techno Weenie - By Rails core committer Rick Olson, who is also creator of: Rails Weenie site, Beast forum program, Mephisto blogging program, and many popular plugins.