@steveklabnik delivers at Pittsburgh Tech Fest 2012 a revised version of his Designing Hypermedia APIs talk that I recorded at a Pittsburgh Ruby Brigade meeting earlier in 2012 (vimeo.com/40084288). Steve's forthcoming book, Designing Hypermedia APIs, is online for preview as it is written at designinghypermediaapis.com.
This revision is more theoretical and actually longer than the other one. I like this one more, honestly.
From the site:
"Every web service needs a killer API to interact with numerous clients and other web services. Users expect the applications they use to work together in interesting and fresh ways; the programmable web has created interesting experiences that the originators of services would have never conceived.
"Hypermedia and RESTful principles drive the largest distributed application ever: the world wide web. The web operates at massive scale and has been in production for over two decades.
"So why wouldn't you use this technology to power your web service?"
This was recorded June 9, 2012 at LaRoche College near Pittsburgh, Pa. at the first ever Pittsburgh Tech Fest, a polyglot developer conference that hosted more than 230 people. See pghtechfest.com for more information.