I've given this talk before, but I've learned so much since then that I suspect a full rewrite may be in order! Talking about the human side of APIs, no code, no data formats, just good clean direction on how to create an API that is robust, secure, delightful to use and painless to maintain. This session could be retitled "10 thing I wish other people had known about designing a web service before I was forced to use what they made" :)

Feedback:

http://www.slideshare.net/lornajane/best-practice-in-web-service-design