Pittsburgh Ruby Users Group - join
Pittsburgh Ruby Users Group, intended for novices and experienced users of ruby alike, feel free to ask questions, post answers, or just meet other Ruby users in the PGH area.
Low activity, 98 members, restricted

ruby - join
Ruby programming discussion.
Low activity, 283 members, restricted

railfrog-dev - join
Discussion list for the Railfrog CMS, the CMS for the rest of us: "Design, Deploy and Maintain Websites with Joy". Railfrog is a lightweight content management system powered by Ruby on Rails for simple deployment and beautiful sites. Please see the Railfrog homepage for more.
Low activity, 154 members, restricted