I couldn't resist.... 10 Great Snake-Oil Gadgets (http://blog.wired.com/gadgets/2007/11/10-awesome-gadg.html).

For our International Covers:

Snake Oil (http://en.wikipedia.org/wiki/Snake_oil)

Stijloor.

For Chinese covers, Refer THIS (http://www.answers.com/topic/snake-oil-1)
(since Wikipedia can not be opened in China)

I was absolutely stunned by the number of comments pro and con on dowsing. For the record, I am NOT the "Wes" who posted one of those comments.