http://www.mindpixel.com/
"The Mindpixel Corpus is the world's first and largest database of validated consensus human knowledge. It is an ever improving approximation of the mind of an average Internet user, constructed and owned tens of thousands of people just like you from all over the world, speaking all of the world's languages.
By talking to GAC in clear and unambigious Mindpixels, you teach what it is to be human. In doing so, you help create the Mindpixel Corpus, which is the largest database of validated human common sense ever attempted to be collected. When complete in 2010 it will have more than one billion individual facts, entered by over two million individual people. The data entry alone for this project is valued at more than $250 million.
A Mindpixel is a binary statement of consensus fact such as "Water is wet" or "It is difficult to swim with ski pants on". The idea behind this project is to collect as many such statements as possible from the world wide internet community and validate them. The database will then be used to train neural net based systems to mimic a human being when presented with Mindpixels. We hope to have 2 million users registered by the end of 2003 and 1 billion validated Mindpixels by 2010. The means about 30 billion transactions!"
cool stuff.