http://www.parislemon.com/2007/12/google-working-on-their-own-accountable.html

“This is huge news. Google tonight decided to disclose on their blog a new project of their’s known as ‘Knol’ that is the early stages of testing. According to them, ‘knol’ stands for “unit of knowledge” and though their description is wordy, it appears very obvious what they are trying to create: a “Pro” or perhaps more accurate, an “Accountable” version of Wikipedia that will be monetized and be featured in Google Search results.”