I just finished reading The Wikipeda Revolution by Andrew Lih. I enjoyed the book and learned quite a bit about how Wikipedia became the force it is today.
I decided to give editing Wikipedia a try. I signed up for an account with the username allaboutimages and started with the article on Scrapbooking. I added a reference to the International Organization for Standardization (ISO) 18902 standard that details requirements for photo-safety, made a few clarifications, and removed a blatant commercial reference.
I am still frustrated with the article. The historical section is very limited and omits many early developments, as well as scrapbooking before the 15th century entirely. The scrapbooking as a business section is dated and does not do a good job of putting the industry into perspective.
If I get more time, I may make another attempt to revise this article. Until then, I encourage others to take a look and consider editing it themselves.
All About Images Blog 
I too was dissatisfied with what I found as a definition for scrapbooking. (though I was looking for scrapbook retreat definitions) I am in the process of creating a presentation for a scrapbook retreat ~vs~ scrapbook weekend, for a local camp. I am sure that we all can benefit from knowing that we CAN edit, definitions that quickly become outdated. *U* Kathleen