Cheshire cat prior art?

Within the post The plagiarism generation, one finds the text:

But it is true that writing in the digital age poses a lot of new questions. For instance, how do we use sources like Wikipedia that have no single author and can't truly be cited because their content could change at any minute, but that are generally extensive, accurate and provide a quick source of information?

Can one cite something that has the quality of "here today, gone tomorrow"? What happens when one of these things reaches the patent office? Can such things be "prior art"?

**Also


Google books does a sikahema

http://ipbiz.blogspot.com/2007/10/vindus-view-cheshire-cat-comments.html