Unlike many things mentioned Mr. Penumbra's 24-Hou Bookstor, Hadoop! and Mechanical Turk are real. Follow the links below to learn more.
http://hadoop.apache.org
https://www.mturk.com/mturk/welcome
I signed up to be a Mechanical Turk. It takes 48 hours to be approved. I'll update with details on the experience in the near future.
