I’ve been using Microsoft OneNote for a few years now, and find it quite useful for storing all sorts of useful things. We’re also using it at home as a way of recording recipes too, instead of having countless slips of scrap paper flying around. Now along comes Google Notebook - a free web-based service that sounds like a pretty similar idea. It only works for Firefox (and IE) at the moment.
I heard Susan Entwisle present at CodeCampOz this year, and it was quite an interesting presentation. Slightly more “academic” or “big-picture” than some of the other talks, but fascinating nonetheless.
To be honest, I’m still not certain that we could make very much use of these kinds of tools with the kind of projects we work on, but it is an interesting field to keep an eye on.
Haven’t read it yet, but we should be getting a copy soon. Jakob knows his stuff, and his earlier book Prioritizing Web Usability (Voices That Matter) is one of the standard references on the subject.