Rules of Thumb website

Tom Parker, a MAKE columnist and author of the classic reference for making quick guesses on anything, Rules of Thumb, has launched a Rules of Thumb website.
200801081316 is officially up and running! The site is fully searchable with the backend machinery to let users rate new contributions IN or OUT of the main db providing a Darwinian weeding mechanism which will let the content improve in value over time. The site tracks your success as a rater and/or contributor and has the basic tagging features which will allow users to discover emergent categories (ala David Weinberger in Everything is Miscellaneous...) I'll be experimenting with variations of tag clouds once I establish a reasonable base of users.