this is an old version. new version here: http://blog.apigee.com/detail/slides_for_restful_api_design_second_edition_webinar/
It's been 10 years since Fielding first defined REST. So, where are all the elegant REST APIs? While many claim REST has arrived, many APIs in the wild exhibit arbitrary, productivity-killing deviations from true REST. We'll start with a typical poorly-designed API and iterate it into a well-behaved RESTful API.