An article I wrote in the summer last year is now on the Scrum Alliance web site. The article focuses on value when deriving user stories for your Product Backlogs and describes a step-by-step process for running the value-driven user stories exercise. Here is a link to the article directly:

Focus on Value - How to Create Value-Driven User Stories

Please comment on this blog if you are using this exercise during Product Backlog “grooming” sessions and let me know how it is working for you. Thanks.