Liver cleansing

Hey, health nuts and others who are into alternative medicine... ever heard of a liver flush or liver cleanse? Is this recommended procedure crazy or could it actually do something? There are some other flushing procedures here but they don't sound as easy.

Stumbled across this on an acne forum because some people are claiming it makes their skin a lot better, and now I'm curious. If I really do have lots of little stones in my liver it might be a nice idea to get them out.