Video by Chris Abad on creating REST web services for Ruby on Rails. Also links to PDF of slides from presentation.
Your Mashup not listed on ProgrammableWeb yet? Tell us about it and get listed.
Google APIlity Library
The New Bloglines Web Services
Amazon E-Commerce Service Tour
APIs, mashups and code. Because the world's your programmable oyster.
Executive Editor, ProgrammableWeb. Author, Map Scripting 101. Lover, APIs.