Location, Path & Attribute Breadcrumbs was Keith Instone's poster at ASIS&T's IA summit. If you dont' mind holding yoru head sideways, it is a very interesting read.

I like breadcrumbs-- they are both a navigational widget and a way to broaden your search.

I learned a lot of things at the summit, from the esoteric to the remarkably practical. Running the gamut of this range was John's talk, Zen and the Art of Deliverables (pdf)

On the practical side, he said "To do a good site map, I need four days of hard thinking and a day to draw it out. I can't always convince the project manager to give me four days to think, but I can often convince people it takes five days to make a site map."

hmm....