The skeptic's dictionary even gave it a begrudging 'a lot of it is junk, but some of it seems to work' ...quite a statement from them. :
Despite the fact that the Silva Method is promoted with hyperbole worthy of Fox news promoting the notion that aliens built the pyramids, it has many satisfied customers. Some claim their backhand in tennis has improved, others claim they were able to quit smoking or lose weight because of the Silva method. Still other say that they are happier and healthier than they've ever been, thanks to the Silva Method. It's been around for over forty years and claims to have instructors in 107 countries. Weekend seminars run about $350 dollars [from http://www.silvacourse.com/whatis.html]. Silva Method, formerly Silva Mind Control