Reach Customers Online pointed me to George Olsen's article on Boxes and Arrows: Making Personas More Powerful: Details to Drive Strategic and Tactical Design. It's a comprehensive look at developing and using personas- and fills in gaps left by the father of personas: Alan Cooper.
I've posted before about a project I'm working on that is using Contextual Inquiry (ethnography) as a way to build a usable distributed learning resource. As part of this process we've created personas that represent our archetypal users.
Just a few days ago, we got our personas laminated -- a final step to give them a more permanent and formal feel. The team is growing and we're working through feature specifications, so the personas are on our mind a lot. The article above was a great refresher for this phase of the project.
See also by George Olsen: Persona Creation and Usage Toolkit (18 page .pdf)