I'm not looking for a free book, but I applaud SQLServerCentral for their prompt and decisive action in both admitting the original plagarism and in seeking to remediate the error....

reference material first:

http://en.wikipedia.org/wiki/Unconference

http://www.unconference.net/unconferencing-how-to-prepare-to-attend-an-unconference/

http://www.unconference.net/

I have attended a number of unconferences over the last 5 years, and find them a richly rewarding alternative to the classic...