As David Brake notes, Wiki's are emerging as the latest web craze (well, if enough bloggers mention them...). There's an article in PC magazine in the US providing an explanation and recommended tools:
"In many ways, wikis are the world's simplest Web sites. Any member can add or edit pages. Users need learn only a few simple formatting rules—no HTML required—and previous versions of pages are saved for easy recovery from errors. The wiki's content is built by all the members working together. If blogs are Web-based diaries, wikis are Web-based public bulletin boards."
It's only appropriate that Tom Steinberg is running a mySociety Wiki to list and discuss the many ideas now coming in for socially-useful uses of social software. Tom floated the idea, originally called the Civic Hacking Fund, at the Bath workshop on Designing for Civil Society in September. You can view his 30-second pitch here as a movie.
At the moment I'm trying to persuade one at least of my clients or collaborators to support the idea of a seminar where we do some workshop games, enhance that with wirelessly-networked laptops, and produce a blog or Wiki for those who couldn't make it. Some meetings facilitators are running these computer-enhanced meetings, but would everyone end up doing their email instead of capturing and contributing to discussion? Laptop etiquette at meetings is an emerging topic as I found when searching for examples. Maybe one things at a time