I love services and have built a few identity systems in my time, so I’ve been watching the advent of OAuth with interest, and loving what I see. So many people see oauth as overcomplicated; it isn’t, but it does have multiple steps which can make it seem a bit long-winded! Hopefully this makes it a bit clearer, with sections for users and developers.

Article: http://thinkvitamin.com/code/introduction-to-oauth/