In my reading I came across an article in Web MD that talks about chocolate being good for the health. This is only for dark chocolate. With white chocolate and milk chocolate the tests that were done came back with little results.

The deal is with dark chocolate it increases antioxidants in people. And in older people has shown to help lower blood pressure. These results occur with moderate eating of dark chocolate. The tests were also done with other types and came back as not having the same effect on people.

I use to work in the MLM world and have seen companies come up with dark chocolate being sold. While dark chocolate is good remember that everything must be done in moderation and not excessively. Also I am not a big fan of MLM, while it supported my family working for the company and not as a distributor, it is easy to loose a lot of money trying to make money.  

For more reading:
http://www.webmd.com/diet/news/20030827/dark-chocolate-is-healthy-chocolate