Updated the VPS guide, which is now 20 pages .. tho the last two are incomplete. I can probably finish it in 25 pages. (No hurry.)
Installed Ruby on Rails today, on my laptop, where it seems to be working fine. Also installed RoR on the Rad VPS, but it seems to be having trouble there. (Problems identified.)
Ruby is a programming (scripting) language (not unlike PHP), known to have elegant syntax. Some even call it artistic.
Rails is a Web Application Framework (not unlike the Zend Framework for PHP) which is built with (and based on) the Ruby scripting language.