Used it immitietly in the afternoon for a project that we were still struggling to define the tasks needed. Very effective, in just getting a discussion going, grouping tasks and assigning estimation units to each task/story.
Well worth a try, even if it made us look like we were playing poker all afternoon, especially as we sat in a tiny glass cubicle at a client.
Agile estimation book by Mike Cohn
Unless otherwise specified, all content is licensed under Creative Commons by Attribution 3.0 (CC-BY).
Externally linked images and content are not included and are licensed and copyrighted separately.